feat: three-tier performance presets (Low/Medium/High) for client + server

Add drop-in performance presets tuned for three hardware tiers.

Tier targets:
- Low: 4GB VRAM/iGPU, 8-16GB RAM
- Medium: RX 580-class 8GB, 16-32GB RAM (shipped as pack default)
- High: RTX 3060+ 8GB+, 32GB+ RAM

Client configs (per tier, presets/<tier>/config/):
- sodium-options.json: chunk threads, cpu render-ahead, quality
- iris.properties: shaders on/off, max shadow render distance
- lambdynlights.toml: dynamic lighting mode + adaptive ticking
- entityculling.json: culling tracing distance
- cullleaves.json: leaf culling
- soundphysics.properties: reverb/ray budget (CPU cost)
- flywheel-client.toml: Create backend (BATCHING vs INSTANCING)

Server configs (per tier, presets/<tier>/server/):
- server.properties: view-distance, sim-distance, players, compression
- jvm-flags.txt: heap + G1 GC flags per RAM tier

Medium configs also copied to client_pack/config/ so they ship as the
mrpack defaults (bundled into overrides/config/).

Docs: docs/performance.md + docs/server.md rewritten for three tiers;
presets/README.md explains how to apply each tier.

Default (Medium) enables shaders with INSTANCING flywheel on the 8GB GPU
tier; Low disables shaders + uses BATCHING for maximum FPS on weak GPUs.

client_pack/config/cullleaves.json

@@ -0,0 +1 @@
+{"enabled": true, "cullRoots": true}

client_pack/config/entityculling.json

@@ -0,0 +1,53 @@
+{
+  "configVersion": 8,
+  "renderNametagsThroughWalls": true,
+  "blockEntityWhitelist": [
+    "create:rope_pulley",
+    "create:hose_pulley",
+    "minecraft:beacon"
+  ],
+  "entityWhitelist": [
+    "minecraft:boat",
+    "minecraft:block_display",
+    "minecraft:item_display",
+    "minecraft:text_display",
+    "create:contraption",
+    "create:gantry_contraption",
+    "create:stationary_contraption",
+    "create:carriage_contraption",
+    "createbigcannons:cannon_carriage",
+    "createbigcannons:pitch_contraption"
+  ],
+  "tracingDistance": 128,
+  "debugMode": false,
+  "sleepDelay": 10,
+  "hitboxLimit": 50,
+  "captureRate": 5,
+  "tickCulling": true,
+  "tickCullingWhitelist": [
+    "minecraft:block_display",
+    "minecraft:item_display",
+    "minecraft:text_display",
+    "minecraft:boat",
+    "minecraft:jungle_boat",
+    "minecraft:spruce_boat",
+    "minecraft:oak_boat",
+    "minecraft:dark_oak_boat",
+    "minecraft:acacia_boat",
+    "minecraft:birch_boat",
+    "minecraft:cherry_boat",
+    "minecraft:mangrove_boat",
+    "create:contraption",
+    "create:gantry_contraption",
+    "create:stationary_contraption",
+    "create:carriage_contraption",
+    "createbigcannons:cannon_carriage",
+    "createbigcannons:pitch_contraption"
+  ],
+  "disableF3": false,
+  "skipEntityCulling": false,
+  "skipBlockEntityCulling": false,
+  "blockEntityFrustumCulling": true,
+  "forceDisplayCulling": false,
+  "solidLeaves": false
+}

client_pack/config/flywheel-client.toml

@@ -0,0 +1,11 @@
+#Select the backend to use. Set to "DEFAULT" to let Flywheel decide.
+#Medium tier: INSTANCING gives good Create contraption performance on a 5600X + RX 580 class machine.
+backend = "INSTANCING"
+#Enable or disable instance update limiting with distance.
+limitUpdates = true
+#The number of worker threads to use. Set to -1 to let Flywheel decide. Set to 0 to disable parallelism.
+workerThreads = 2
+
+#Config options for Flywheel's built-in backends.
+[flw_backends]
+	lightSmoothness = "SMOOTH"

client_pack/config/iris.properties

@@ -0,0 +1,9 @@
+#This file stores configuration options for Iris, such as the currently active shaderpack
+#SCICRAFT Medium preset
+allowUnknownShaders=false
+colorSpace=SRGB
+disableUpdateMessage=true
+enableDebugOptions=false
+enableShaders=true
+maxShadowRenderDistance=32
+shaderPack=

client_pack/config/lambdynlights.toml

@@ -0,0 +1,27 @@
+# LambDynamicLights configuration.
+# The dynamic lights mode (off, simple, fancy)
+mode = "fancy"
+
+# The chunk rebuild scheduler mode (immediate, culling).
+chunk_rebuild_scheduler = "culling"
+
+[adaptive_ticking]
+	# How far away (in chunks) until light sources get ticked less often.
+	slow = 5
+	# How far away (in chunks) until light sources get ticked even less often.
+	slower = 8
+	# Reduces how often sources behind the camera get ticked.
+	background_sleep = true
+
+# Light sources settings.
+[light_sources]
+	entities = true
+	self = true
+	water_sensitive_check = true
+	creeper = "simple"
+	tnt = "off"
+	beam = true
+	firefly = true
+	guardian_laser = true
+	sonic_boom = true
+	glowing_effect = true

client_pack/config/sodium-options.json

@@ -0,0 +1,30 @@
+{
+  "quality": {
+    "weather_quality": "DEFAULT",
+    "leaves_quality": "DEFAULT",
+    "enable_vignette": true,
+    "use_closest_point_entity_sort": false
+  },
+  "advanced": {
+    "enable_memory_tracing": false,
+    "use_advanced_staging_buffers": true,
+    "cpu_render_ahead_limit": 3
+  },
+  "performance": {
+    "chunk_builder_threads": 0,
+    "chunk_build_defer_mode": "ALWAYS",
+    "animate_only_visible_textures": true,
+    "use_entity_culling": true,
+    "use_fog_occlusion": true,
+    "use_block_face_culling": true,
+    "use_no_error_g_l_context": true,
+    "quad_splitting_mode": "SAFE"
+  },
+  "notifications": {
+    "has_cleared_donation_button": false,
+    "has_seen_donation_prompt": false
+  },
+  "debug": {
+    "terrain_sorting_enabled": true
+  }
+}

client_pack/config/sound_physics_remastered/soundphysics.properties

@@ -0,0 +1,38 @@
+# Enables/Disables all sound effects
+enabled=true
+attenuation_factor=1.0
+reverb_attenuation_distance=0.0
+reverb_gain=1.0
+reverb_brightness=1.0
+reverb_distance=1.5
+block_absorption=1.0
+occlusion_variation=0.35
+default_block_reflectivity=0.5
+default_block_occlusion_factor=1.0
+sound_distance_allowance=4.0
+air_absorption=1.0
+underwater_filter=0.9
+evaluate_ambient_sounds=false
+environment_evaluation_ray_count=24
+environment_evaluation_ray_bounces=4
+non_full_block_occlusion_factor=0.25
+max_occlusion_rays=16
+max_occlusion=64.0
+strict_occlusion=false
+sound_direction_evaluation=true
+redirect_non_occluded_sounds=true
+update_moving_sounds=false
+sound_update_interval=5
+max_sound_processing_distance=512.0
+unsafe_level_access=false
+level_clone_range=4
+level_clone_max_retain_ticks=20
+level_clone_max_retain_block_distance=16
+debug_logging=false
+occlusion_logging=false
+environment_logging=false
+performance_logging=false
+render_sound_bounces=false
+render_occlusion=false
+simple_voice_chat_integration=true
+simple_voice_chat_hear_self=false

docs/performance.md

@@ -1,25 +1,67 @@
 # Performance — Client
 
-## Shader Tuning for 4GB VRAM
+Three drop-in tiers are provided: **Low**, **Medium**, and **High**. The
+**Medium** tier ships as the pack default (matches a Ryzen 5 5600X / 16-32 GB
+RAM / RX 580 8 GB machine). Full details and copy commands live in
+`presets/README.md`.
+
+| Tier | Target | Shaders | Render distance | Key trade-offs |
+|------|--------|---------|-----------------|----------------|
+| **Low** | 4 GB VRAM / iGPU | **Off** | 4-6 | Minimal effects, most CPU headroom |
+| **Medium** | 8 GB VRAM (RX 580-class) | On (Complementary, Performance) | 8 | Balanced 60 FPS — **default** |
+| **High** | 8 GB+ VRAM (RTX 3060+) | On (Complementary, Ultra) | 10-12 | Max visual quality |
+
+## Applying a tier
+
+```bash
+# client configs → instance config dir
+cp -r presets/low/config/* ~/.local/share/PrismLauncher/instances/<instance>/minecraft/config/
+```
+
+Restart the game after copying. See `presets/README.md` for the full file map.
+
+## What each tier changes
+
+| Config | Low | Medium | High |
+|--------|-----|--------|------|
+| Sodium chunk threads | 1 | auto | auto |
+| Sodium cpu render-ahead | 1 | 3 | 4 |
+| Sodium quality | FAST | DEFAULT | DEFAULT |
+| Iris shaders | **off** | on, shadow 32 | on, shadow 64 |
+| Dynamic lights | simple | fancy | fancy (max) |
+| Entity culling distance | 64 | 128 | 192 |
+| Sound reverb rays | 16 | 24 | 32 |
+| Flywheel backend | BATCHING | INSTANCING | INSTANCING |
+
+## Shader tuning (Complementary Reimagined r5.4)
 
 Shader loader is **Iris** (native NeoForge). Recommended shaderpack:
 **Complementary Reimagined r5.4** (`client_pack/shaderpacks/`, see README).
 
-Preset for 4GB VRAM:
+In-game (`Esc → Options → Shader Packs → Complementary → Shader Pack Settings`):
-- Preset: **Fast / Performance**
-- Render Distance: **8** (server view-distance)
-- Antialiasing: **OFF**
-- SSAO: **Fast**, Shadow Quality **1.0x** (0.5x if <30 FPS)
-- Shadow Distance: **64**
-- Bloom: **OFF/Low**, Clouds: **2D Fast**
-- Water Reflections: **Screenspace Fast**
-- Colored Light / Block Light: **OFF**
 
-If still under 60 FPS: reduce Shadow Quality to 0.5x, then disable Bloom,
+### Medium (8 GB VRAM)
-before touching render distance.
+- Preset: **Fast / Performance**
+- Antialiasing: OFF, SSAO: Fast, Shadow Quality 1.0x
+- Shadow Distance: 64, Bloom: Low, Clouds: 2D Fast
+- Water Reflections: Screenspace Fast, Colored Light: OFF
+
+### High (8 GB+ VRAM)
+- Preset: **High / Default**
+- Antialiasing: OFF or FXAA, SSAO: High, Shadow Quality 1.5x
+- Shadow Distance: 128, Bloom: On, Clouds: 3D
+- Water Reflections: Screenspace, Colored Light: On
+
+### Low (no shaders, or "Potato")
+- Play with shaders **off** (Iris `enableShaders=false`).
+- If you want them on, use Complementary "Potato/Ultra" preset, shadows OFF.
+
+If FPS is still low, lower Shadow Quality / disable Bloom before touching
+render distance.
 
 ## Reload rules
 
 - Server scripts / recipes / advancements: `/reload`
 - Client tooltips / JEI / textures / lang: `F3+T`
 - New items/blocks (`registry_blocks.js`): **full restart**
+- Config files (Sodium, Iris, etc.): **full restart**

docs/server.md

@@ -1,24 +1,24 @@
 # Server — Properties, JVM, Operations
 
-## Server properties (view-distance=8, simulation-distance=6)
+Three server tiers are provided as drop-in presets in `presets/<tier>/server/`
+(see `presets/README.md`). The **Medium** tier is the recommended default.
 
-`server_pack/server.properties` — set these values:
+| Tier | Host RAM | view-distance | simulation-distance | max-players |
+|------|----------|---------------|---------------------|-------------|
+| Low | 8-16 GB | 5 | 4 | 8 |
+| **Medium** | 16-32 GB | 8 | 6 | 8 |
+| High | 32 GB+ | 12 | 10 | 16 |
 
-```properties
+Apply a tier (after `packwiz install`):
-view-distance=8
+
-simulation-distance=6
+```bash
-max-players=8
+cp presets/medium/server/server.properties server_pack/server.properties
-motd=SCICRAFT - The Dark Photon Protocol
+# then use the matching jvm-flags.txt when launching
-difficulty=hard
-spawn-protection=0
-network-compression-threshold=256
-enable-command-block=true
-online-mode=true
 ```
 
 `server_pack/eula.txt` → `eula=true` (after review).
 
-## Recommended JVM Flags (server)
+## Recommended JVM Flags (server, Medium)
 
 ```bash
 java -Xms4G -Xmx8G \
@@ -44,8 +44,10 @@ java -Xms4G -Xmx8G \
 Notes:
 - G1 tuning keeps large-tech-server TPS stable under chunk gen (Krypton
   Reno + BadOptimizations help server-side).
-- `-Xms4G` avoids early GC churn. Cap at 8G; this pack is RAM-hungry
+- `-Xms4G` avoids early GC churn. Cap at 8G for Medium; this pack is
-  from AE2/Mekanism tick load but does not need 16G.
+  RAM-hungry from AE2/Mekanism tick load but Medium does not need 16G.
+- See `presets/low/server/jvm-flags.txt` (2-4G) and
+  `presets/high/server/jvm-flags.txt` (8-16G) for the other tiers.
 
 ## Server start order
 

presets/README.md

@@ -0,0 +1,70 @@
+# Performance Presets — SCICRAFT
+
+Three drop-in tiers for client (and server) tuning. The **Medium** tier is the
+pack default — it ships inside the mrpack (`overrides/config/`) and matches a
+Ryzen 5 5600X / 16-32 GB RAM / RX 580 8 GB class machine.
+
+To use a different tier, copy the files from the matching folder into the
+`.minecraft/config/` directory (client) and the pack's `server/` directory
+(server), then restart.
+
+## Tier targets
+
+| Tier | CPU | RAM | GPU | Use case |
+|------|-----|-----|-----|----------|
+| **Low** | 4-core / older | 8-16 GB | 4 GB VRAM or iGPU | Integrated graphics, laptops, weak desktops |
+| **Medium** | 6-8 core (5600X-class) | 16-32 GB | 8 GB VRAM (RX 580-class) | **Default. Balanced 60 FPS.** |
+| **High** | 8+ core | 32 GB+ | 8 GB+ VRAM (RTX 3060+) | High FPS at high render distance / shaders |
+
+## What's included per tier
+
+### Client (`presets/<tier>/config/` → `.minecraft/config/`)
+
+| File | Effect |
+|------|--------|
+| `sodium-options.json` | Terrain renderer: chunk threads, culling, quality |
+| `iris.properties` | Shader loader: on/off, max shadow render distance |
+| `lambdynlights.toml` | Dynamic lighting quality / adaptive ticking |
+| `entityculling.json` | Entity/block-entity culling distance |
+| `cullleaves.json` | Leaf culling on/off |
+| `soundphysics.properties` | Reverb/ray budget (audio CPU cost) |
+| `flywheel-client.toml` | Create/Flywheel render backend (batching vs instancing) |
+
+> Note: `sodium-mixins.properties` is left at default on all tiers. Hand-editing
+> Sodium mixin flags can cause crashes, so we tune the safe, supported options
+> (`sodium-options.json`) instead.
+
+### Server (`presets/<tier>/server/`)
+
+| File | Effect |
+|------|--------|
+| `server.properties` | view-distance, simulation-distance, compression |
+| `jvm-flags.txt` | Recommended JVM heap + GC flags for that RAM tier |
+
+## Applying a tier (client)
+
+```bash
+# Example: switch to LOW
+cp -r presets/low/config/* ~/.local/share/PrismLauncher/instances/<instance>/minecraft/config/
+```
+
+Then restart the game. Shader-pack in-game settings (Complementary) still
+override a few visual options — see `docs/performance.md`.
+
+## Applying a tier (server)
+
+```bash
+# Example: switch to LOW
+cp presets/low/server/server.properties server_pack/server.properties
+# use the jvm-flags.txt line when launching
+```
+
+## Notes
+
+- **Shaders are disabled on the Low tier** — this is the single biggest FPS win.
+  On Low, either play without a shaderpack or use an "Ultra/Performance"
+  preset of Complementary with shadows off.
+- **Medium is the shipped default** — the mrpack already contains these configs,
+  so players who do nothing get the balanced experience.
+- `enableShaderCompatibleRendering` is on for Mekanism Covers on all tiers so
+  covers render correctly with shaders.

presets/high/config/cullleaves.json

@@ -0,0 +1 @@
+{"enabled": true, "cullRoots": true}

presets/high/config/entityculling.json

@@ -0,0 +1,53 @@
+{
+  "configVersion": 8,
+  "renderNametagsThroughWalls": true,
+  "blockEntityWhitelist": [
+    "create:rope_pulley",
+    "create:hose_pulley",
+    "minecraft:beacon"
+  ],
+  "entityWhitelist": [
+    "minecraft:boat",
+    "minecraft:block_display",
+    "minecraft:item_display",
+    "minecraft:text_display",
+    "create:contraption",
+    "create:gantry_contraption",
+    "create:stationary_contraption",
+    "create:carriage_contraption",
+    "createbigcannons:cannon_carriage",
+    "createbigcannons:pitch_contraption"
+  ],
+  "tracingDistance": 192,
+  "debugMode": false,
+  "sleepDelay": 10,
+  "hitboxLimit": 60,
+  "captureRate": 6,
+  "tickCulling": true,
+  "tickCullingWhitelist": [
+    "minecraft:block_display",
+    "minecraft:item_display",
+    "minecraft:text_display",
+    "minecraft:boat",
+    "minecraft:jungle_boat",
+    "minecraft:spruce_boat",
+    "minecraft:oak_boat",
+    "minecraft:dark_oak_boat",
+    "minecraft:acacia_boat",
+    "minecraft:birch_boat",
+    "minecraft:cherry_boat",
+    "minecraft:mangrove_boat",
+    "create:contraption",
+    "create:gantry_contraption",
+    "create:stationary_contraption",
+    "create:carriage_contraption",
+    "createbigcannons:cannon_carriage",
+    "createbigcannons:pitch_contraption"
+  ],
+  "disableF3": false,
+  "skipEntityCulling": false,
+  "skipBlockEntityCulling": false,
+  "blockEntityFrustumCulling": true,
+  "forceDisplayCulling": false,
+  "solidLeaves": false
+}

presets/high/config/flywheel-client.toml

@@ -0,0 +1,11 @@
+#Select the backend to use. Set to "DEFAULT" to let Flywheel decide.
+#High tier: INSTANCING on a modern GPU. Auto threads.
+backend = "INSTANCING"
+#Enable or disable instance update limiting with distance.
+limitUpdates = true
+#The number of worker threads to use. Set to -1 to let Flywheel decide. Set to 0 to disable parallelism.
+workerThreads = -1
+
+#Config options for Flywheel's built-in backends.
+[flw_backends]
+	lightSmoothness = "SMOOTH_INNER_FACE_CORRECTED"

presets/high/config/iris.properties

@@ -0,0 +1,9 @@
+#This file stores configuration options for Iris, such as the currently active shaderpack
+#SCICRAFT High preset
+allowUnknownShaders=false
+colorSpace=SRGB
+disableUpdateMessage=true
+enableDebugOptions=false
+enableShaders=true
+maxShadowRenderDistance=64
+shaderPack=

presets/high/config/lambdynlights.toml

@@ -0,0 +1,24 @@
+# LambDynamicLights configuration.
+# The dynamic lights mode (off, simple, fancy)
+mode = "fancy"
+
+# The chunk rebuild scheduler mode (immediate, culling).
+chunk_rebuild_scheduler = "culling"
+
+[adaptive_ticking]
+	slow = 6
+	slower = 10
+	background_sleep = true
+
+# Light sources settings.
+[light_sources]
+	entities = true
+	self = true
+	water_sensitive_check = true
+	creeper = "fancy"
+	tnt = "fancy"
+	beam = true
+	firefly = true
+	guardian_laser = true
+	sonic_boom = true
+	glowing_effect = true

presets/high/config/sodium-options.json

@@ -0,0 +1,30 @@
+{
+  "quality": {
+    "weather_quality": "DEFAULT",
+    "leaves_quality": "DEFAULT",
+    "enable_vignette": true,
+    "use_closest_point_entity_sort": true
+  },
+  "advanced": {
+    "enable_memory_tracing": false,
+    "use_advanced_staging_buffers": true,
+    "cpu_render_ahead_limit": 4
+  },
+  "performance": {
+    "chunk_builder_threads": 0,
+    "chunk_build_defer_mode": "ALWAYS",
+    "animate_only_visible_textures": true,
+    "use_entity_culling": true,
+    "use_fog_occlusion": true,
+    "use_block_face_culling": true,
+    "use_no_error_g_l_context": true,
+    "quad_splitting_mode": "SAFE"
+  },
+  "notifications": {
+    "has_cleared_donation_button": false,
+    "has_seen_donation_prompt": false
+  },
+  "debug": {
+    "terrain_sorting_enabled": true
+  }
+}

presets/high/config/soundphysics.properties

@@ -0,0 +1,38 @@
+# Enables/Disables all sound effects
+enabled=true
+attenuation_factor=1.0
+reverb_attenuation_distance=0.0
+reverb_gain=1.0
+reverb_brightness=1.0
+reverb_distance=1.5
+block_absorption=1.0
+occlusion_variation=0.35
+default_block_reflectivity=0.5
+default_block_occlusion_factor=1.0
+sound_distance_allowance=4.0
+air_absorption=1.0
+underwater_filter=0.9
+evaluate_ambient_sounds=true
+environment_evaluation_ray_count=32
+environment_evaluation_ray_bounces=4
+non_full_block_occlusion_factor=0.25
+max_occlusion_rays=16
+max_occlusion=64.0
+strict_occlusion=false
+sound_direction_evaluation=true
+redirect_non_occluded_sounds=true
+update_moving_sounds=false
+sound_update_interval=5
+max_sound_processing_distance=512.0
+unsafe_level_access=false
+level_clone_range=4
+level_clone_max_retain_ticks=20
+level_clone_max_retain_block_distance=16
+debug_logging=false
+occlusion_logging=false
+environment_logging=false
+performance_logging=false
+render_sound_bounces=false
+render_occlusion=false
+simple_voice_chat_integration=true
+simple_voice_chat_hear_self=false

presets/high/server/jvm-flags.txt

@@ -0,0 +1,19 @@
+# SCICRAFT High tier server JVM flags - 32GB+ RAM host
+# Launch with: java <flags> -jar neoforge-21.1.248-server.jar nogui
+-Xms8G -Xmx16G \
+  -XX:+UseG1GC \
+  -XX:+ParallelRefProcEnabled \
+  -XX:MaxGCPauseMillis=150 \
+  -XX:+UnlockExperimentalVMOptions \
+  -XX:+DisableExplicitGC \
+  -XX:+AlwaysPreTouch \
+  -XX:G1NewSizePercent=30 \
+  -XX:G1MaxNewSizePercent=40 \
+  -XX:G1HeapRegionSize=16M \
+  -XX:G1ReservePercent=20 \
+  -XX:G1HeapWastePercent=5 \
+  -XX:G1MixedGCCountTarget=4 \
+  -XX:InitiatingHeapOccupancyPercent=15 \
+  -XX:G1MixedGCLiveThresholdPercent=90 \
+  -XX:G1RSetUpdatingPauseTimePercent=5 \
+  -Dlog4j2.formatMsgNoLookups=true

presets/high/server/server.properties

@@ -0,0 +1,13 @@
+#SCICRAFT High tier - for a beefy server host (8+ core / 32GB+ RAM)
+# Generated by presets/high/server/server.properties
+view-distance=12
+simulation-distance=10
+max-players=16
+motd=SCICRAFT - The Dark Photon Protocol
+difficulty=hard
+spawn-protection=0
+network-compression-threshold=512
+enable-command-block=true
+online-mode=true
+max-tick-time=60000
+entity-broadcast-range-percentage=100

presets/low/config/cullleaves.json

@@ -0,0 +1 @@
+{"enabled": true, "cullRoots": true}

presets/low/config/entityculling.json

@@ -0,0 +1,53 @@
+{
+  "configVersion": 8,
+  "renderNametagsThroughWalls": true,
+  "blockEntityWhitelist": [
+    "create:rope_pulley",
+    "create:hose_pulley",
+    "minecraft:beacon"
+  ],
+  "entityWhitelist": [
+    "minecraft:boat",
+    "minecraft:block_display",
+    "minecraft:item_display",
+    "minecraft:text_display",
+    "create:contraption",
+    "create:gantry_contraption",
+    "create:stationary_contraption",
+    "create:carriage_contraption",
+    "createbigcannons:cannon_carriage",
+    "createbigcannons:pitch_contraption"
+  ],
+  "tracingDistance": 64,
+  "debugMode": false,
+  "sleepDelay": 8,
+  "hitboxLimit": 40,
+  "captureRate": 4,
+  "tickCulling": true,
+  "tickCullingWhitelist": [
+    "minecraft:block_display",
+    "minecraft:item_display",
+    "minecraft:text_display",
+    "minecraft:boat",
+    "minecraft:jungle_boat",
+    "minecraft:spruce_boat",
+    "minecraft:oak_boat",
+    "minecraft:dark_oak_boat",
+    "minecraft:acacia_boat",
+    "minecraft:birch_boat",
+    "minecraft:cherry_boat",
+    "minecraft:mangrove_boat",
+    "create:contraption",
+    "create:gantry_contraption",
+    "create:stationary_contraption",
+    "create:carriage_contraption",
+    "createbigcannons:cannon_carriage",
+    "createbigcannons:pitch_contraption"
+  ],
+  "disableF3": false,
+  "skipEntityCulling": false,
+  "skipBlockEntityCulling": false,
+  "blockEntityFrustumCulling": true,
+  "forceDisplayCulling": false,
+  "solidLeaves": false
+}

presets/low/config/flywheel-client.toml

@@ -0,0 +1,11 @@
+#Select the backend to use. Set to "DEFAULT" to let Flywheel decide.
+#Low tier: BATCHING is the most compatible/least demanding on weak GPUs/iGPU.
+backend = "BATCHING"
+#Enable or disable instance update limiting with distance.
+limitUpdates = true
+#The number of worker threads to use. Set to -1 to let Flywheel decide. Set to 0 to disable parallelism.
+workerThreads = 1
+
+#Config options for Flywheel's built-in backends.
+[flw_backends]
+	lightSmoothness = "FLAT"

presets/low/config/iris.properties

@@ -0,0 +1,9 @@
+#This file stores configuration options for Iris, such as the currently active shaderpack
+#SCICRAFT Low preset - shaders DISABLED for maximum performance
+allowUnknownShaders=false
+colorSpace=SRGB
+disableUpdateMessage=true
+enableDebugOptions=false
+enableShaders=false
+maxShadowRenderDistance=16
+shaderPack=

presets/low/config/lambdynlights.toml

@@ -0,0 +1,24 @@
+# LambDynamicLights configuration.
+# The dynamic lights mode (off, simple, fancy)
+mode = "simple"
+
+# The chunk rebuild scheduler mode (immediate, culling).
+chunk_rebuild_scheduler = "culling"
+
+[adaptive_ticking]
+	slow = 4
+	slower = 6
+	background_sleep = true
+
+# Light sources settings.
+[light_sources]
+	entities = true
+	self = true
+	water_sensitive_check = true
+	creeper = "off"
+	tnt = "off"
+	beam = false
+	firefly = false
+	guardian_laser = false
+	sonic_boom = false
+	glowing_effect = true

presets/low/config/sodium-options.json

@@ -0,0 +1,30 @@
+{
+  "quality": {
+    "weather_quality": "FAST",
+    "leaves_quality": "FAST",
+    "enable_vignette": false,
+    "use_closest_point_entity_sort": true
+  },
+  "advanced": {
+    "enable_memory_tracing": false,
+    "use_advanced_staging_buffers": true,
+    "cpu_render_ahead_limit": 1
+  },
+  "performance": {
+    "chunk_builder_threads": 1,
+    "chunk_build_defer_mode": "ALWAYS",
+    "animate_only_visible_textures": true,
+    "use_entity_culling": true,
+    "use_fog_occlusion": false,
+    "use_block_face_culling": true,
+    "use_no_error_g_l_context": true,
+    "quad_splitting_mode": "FAST"
+  },
+  "notifications": {
+    "has_cleared_donation_button": false,
+    "has_seen_donation_prompt": false
+  },
+  "debug": {
+    "terrain_sorting_enabled": true
+  }
+}

presets/low/config/soundphysics.properties

@@ -0,0 +1,41 @@
+# Enables/Disables all sound effects
+enabled=true
+# Lower attenuation for less CPU on low-end
+attenuation_factor=1.0
+# Reverb disabled on low tier to save CPU
+reverb_attenuation_distance=0.0
+reverb_gain=0.6
+reverb_brightness=1.0
+reverb_distance=1.2
+block_absorption=1.0
+occlusion_variation=0.35
+default_block_reflectivity=0.5
+default_block_occlusion_factor=1.0
+sound_distance_allowance=3.0
+air_absorption=1.0
+underwater_filter=0.9
+evaluate_ambient_sounds=false
+# Fewer rays = fewer lag spikes on weak CPUs
+environment_evaluation_ray_count=16
+environment_evaluation_ray_bounces=2
+non_full_block_occlusion_factor=0.25
+max_occlusion_rays=8
+max_occlusion=32.0
+strict_occlusion=false
+sound_direction_evaluation=true
+redirect_non_occluded_sounds=true
+update_moving_sounds=false
+sound_update_interval=5
+max_sound_processing_distance=256.0
+unsafe_level_access=false
+level_clone_range=2
+level_clone_max_retain_ticks=15
+level_clone_max_retain_block_distance=12
+debug_logging=false
+occlusion_logging=false
+environment_logging=false
+performance_logging=false
+render_sound_bounces=false
+render_occlusion=false
+simple_voice_chat_integration=true
+simple_voice_chat_hear_self=false

presets/low/server/jvm-flags.txt

@@ -0,0 +1,18 @@
+# SCICRAFT Low tier server JVM flags - 8-16GB RAM host
+# Launch with: java <flags> -jar neoforge-21.1.248-server.jar nogui
+-Xms2G -Xmx4G \
+  -XX:+UseG1GC \
+  -XX:+ParallelRefProcEnabled \
+  -XX:MaxGCPauseMillis=200 \
+  -XX:+UnlockExperimentalVMOptions \
+  -XX:+DisableExplicitGC \
+  -XX:+AlwaysPreTouch \
+  -XX:G1NewSizePercent=30 \
+  -XX:G1MaxNewSizePercent=40 \
+  -XX:G1HeapRegionSize=8M \
+  -XX:G1ReservePercent=20 \
+  -XX:G1HeapWastePercent=5 \
+  -XX:G1MixedGCCountTarget=4 \
+  -XX:InitiatingHeapOccupancyPercent=15 \
+  -XX:G1MixedGCLiveThresholdPercent=90 \
+  -Dlog4j2.formatMsgNoLookups=true

presets/low/server/server.properties

@@ -0,0 +1,13 @@
+#SCICRAFT Low tier - for a lower-end server host (4 cores / 8-16GB RAM)
+# Generated by presets/low/server/server.properties
+view-distance=5
+simulation-distance=4
+max-players=8
+motd=SCICRAFT - The Dark Photon Protocol [Low]
+difficulty=hard
+spawn-protection=0
+network-compression-threshold=256
+enable-command-block=true
+online-mode=true
+max-tick-time=60000
+entity-broadcast-range-percentage=50

presets/medium/config/cullleaves.json

@@ -0,0 +1 @@
+{"enabled": true, "cullRoots": true}

presets/medium/config/entityculling.json

@@ -0,0 +1,53 @@
+{
+  "configVersion": 8,
+  "renderNametagsThroughWalls": true,
+  "blockEntityWhitelist": [
+    "create:rope_pulley",
+    "create:hose_pulley",
+    "minecraft:beacon"
+  ],
+  "entityWhitelist": [
+    "minecraft:boat",
+    "minecraft:block_display",
+    "minecraft:item_display",
+    "minecraft:text_display",
+    "create:contraption",
+    "create:gantry_contraption",
+    "create:stationary_contraption",
+    "create:carriage_contraption",
+    "createbigcannons:cannon_carriage",
+    "createbigcannons:pitch_contraption"
+  ],
+  "tracingDistance": 128,
+  "debugMode": false,
+  "sleepDelay": 10,
+  "hitboxLimit": 50,
+  "captureRate": 5,
+  "tickCulling": true,
+  "tickCullingWhitelist": [
+    "minecraft:block_display",
+    "minecraft:item_display",
+    "minecraft:text_display",
+    "minecraft:boat",
+    "minecraft:jungle_boat",
+    "minecraft:spruce_boat",
+    "minecraft:oak_boat",
+    "minecraft:dark_oak_boat",
+    "minecraft:acacia_boat",
+    "minecraft:birch_boat",
+    "minecraft:cherry_boat",
+    "minecraft:mangrove_boat",
+    "create:contraption",
+    "create:gantry_contraption",
+    "create:stationary_contraption",
+    "create:carriage_contraption",
+    "createbigcannons:cannon_carriage",
+    "createbigcannons:pitch_contraption"
+  ],
+  "disableF3": false,
+  "skipEntityCulling": false,
+  "skipBlockEntityCulling": false,
+  "blockEntityFrustumCulling": true,
+  "forceDisplayCulling": false,
+  "solidLeaves": false
+}

presets/medium/config/flywheel-client.toml

@@ -0,0 +1,11 @@
+#Select the backend to use. Set to "DEFAULT" to let Flywheel decide.
+#Medium tier: INSTANCING gives good Create contraption performance on a 5600X + RX 580 class machine.
+backend = "INSTANCING"
+#Enable or disable instance update limiting with distance.
+limitUpdates = true
+#The number of worker threads to use. Set to -1 to let Flywheel decide. Set to 0 to disable parallelism.
+workerThreads = 2
+
+#Config options for Flywheel's built-in backends.
+[flw_backends]
+	lightSmoothness = "SMOOTH"

presets/medium/config/iris.properties

@@ -0,0 +1,9 @@
+#This file stores configuration options for Iris, such as the currently active shaderpack
+#SCICRAFT Medium preset
+allowUnknownShaders=false
+colorSpace=SRGB
+disableUpdateMessage=true
+enableDebugOptions=false
+enableShaders=true
+maxShadowRenderDistance=32
+shaderPack=

presets/medium/config/lambdynlights.toml

@@ -0,0 +1,27 @@
+# LambDynamicLights configuration.
+# The dynamic lights mode (off, simple, fancy)
+mode = "fancy"
+
+# The chunk rebuild scheduler mode (immediate, culling).
+chunk_rebuild_scheduler = "culling"
+
+[adaptive_ticking]
+	# How far away (in chunks) until light sources get ticked less often.
+	slow = 5
+	# How far away (in chunks) until light sources get ticked even less often.
+	slower = 8
+	# Reduces how often sources behind the camera get ticked.
+	background_sleep = true
+
+# Light sources settings.
+[light_sources]
+	entities = true
+	self = true
+	water_sensitive_check = true
+	creeper = "simple"
+	tnt = "off"
+	beam = true
+	firefly = true
+	guardian_laser = true
+	sonic_boom = true
+	glowing_effect = true

presets/medium/config/sodium-options.json

@@ -0,0 +1,30 @@
+{
+  "quality": {
+    "weather_quality": "DEFAULT",
+    "leaves_quality": "DEFAULT",
+    "enable_vignette": true,
+    "use_closest_point_entity_sort": false
+  },
+  "advanced": {
+    "enable_memory_tracing": false,
+    "use_advanced_staging_buffers": true,
+    "cpu_render_ahead_limit": 3
+  },
+  "performance": {
+    "chunk_builder_threads": 0,
+    "chunk_build_defer_mode": "ALWAYS",
+    "animate_only_visible_textures": true,
+    "use_entity_culling": true,
+    "use_fog_occlusion": true,
+    "use_block_face_culling": true,
+    "use_no_error_g_l_context": true,
+    "quad_splitting_mode": "SAFE"
+  },
+  "notifications": {
+    "has_cleared_donation_button": false,
+    "has_seen_donation_prompt": false
+  },
+  "debug": {
+    "terrain_sorting_enabled": true
+  }
+}

presets/medium/config/soundphysics.properties

@@ -0,0 +1,38 @@
+# Enables/Disables all sound effects
+enabled=true
+attenuation_factor=1.0
+reverb_attenuation_distance=0.0
+reverb_gain=1.0
+reverb_brightness=1.0
+reverb_distance=1.5
+block_absorption=1.0
+occlusion_variation=0.35
+default_block_reflectivity=0.5
+default_block_occlusion_factor=1.0
+sound_distance_allowance=4.0
+air_absorption=1.0
+underwater_filter=0.9
+evaluate_ambient_sounds=false
+environment_evaluation_ray_count=24
+environment_evaluation_ray_bounces=4
+non_full_block_occlusion_factor=0.25
+max_occlusion_rays=16
+max_occlusion=64.0
+strict_occlusion=false
+sound_direction_evaluation=true
+redirect_non_occluded_sounds=true
+update_moving_sounds=false
+sound_update_interval=5
+max_sound_processing_distance=512.0
+unsafe_level_access=false
+level_clone_range=4
+level_clone_max_retain_ticks=20
+level_clone_max_retain_block_distance=16
+debug_logging=false
+occlusion_logging=false
+environment_logging=false
+performance_logging=false
+render_sound_bounces=false
+render_occlusion=false
+simple_voice_chat_integration=true
+simple_voice_chat_hear_self=false

presets/medium/server/jvm-flags.txt

@@ -0,0 +1,19 @@
+# SCICRAFT Medium tier server JVM flags - 16-32GB RAM host
+# Launch with: java <flags> -jar neoforge-21.1.248-server.jar nogui
+-Xms4G -Xmx8G \
+  -XX:+UseG1GC \
+  -XX:+ParallelRefProcEnabled \
+  -XX:MaxGCPauseMillis=200 \
+  -XX:+UnlockExperimentalVMOptions \
+  -XX:+DisableExplicitGC \
+  -XX:+AlwaysPreTouch \
+  -XX:G1NewSizePercent=30 \
+  -XX:G1MaxNewSizePercent=40 \
+  -XX:G1HeapRegionSize=8M \
+  -XX:G1ReservePercent=20 \
+  -XX:G1HeapWastePercent=5 \
+  -XX:G1MixedGCCountTarget=4 \
+  -XX:InitiatingHeapOccupancyPercent=15 \
+  -XX:G1MixedGCLiveThresholdPercent=90 \
+  -XX:G1RSetUpdatingPauseTimePercent=5 \
+  -Dlog4j2.formatMsgNoLookups=true

presets/medium/server/server.properties

@@ -0,0 +1,13 @@
+#SCICRAFT Medium tier - balanced (6-8 core / 16-32GB RAM)
+# Generated by presets/medium/server/server.properties
+view-distance=8
+simulation-distance=6
+max-players=8
+motd=SCICRAFT - The Dark Photon Protocol
+difficulty=hard
+spawn-protection=0
+network-compression-threshold=256
+enable-command-block=true
+online-mode=true
+max-tick-time=60000
+entity-broadcast-range-percentage=75