diff --git a/client_pack/config/modernfix-mixins.properties b/client_pack/config/modernfix-mixins.properties
new file mode 100644
index 0000000..a4ccd67
--- /dev/null
+++ b/client_pack/config/modernfix-mixins.properties
@@ -0,0 +1,5 @@
+# FKRPG ModernFix overrides — disable problematic mixins for 1.21.1 Fabric with SpellEngine 1.7 + Tectonic
+mixin.perf.dynamic_resources=false
+mixin.perf.cache_blockstate_cache_arrays=false
+mixin.perf.faster_texture_stitching=false
+mixin.perf.dynamic_dfu=false
diff --git a/client_pack/index.toml b/client_pack/index.toml
index f6751b6..fa3a8f0 100644
--- a/client_pack/index.toml
+++ b/client_pack/index.toml
@@ -789,7 +789,7 @@ metafile = true
 
 [[files]]
 file = "mods/spell-engine.pw.toml"
-hash = "4f4ea97eb16d0d7e6eee52581ffaf13977f9354de8903f40998f9f187ec8133b"
+hash = "12ee8e8883888e0d8694230665816228de786452d0888de0c2f87b0a1bc04a47"
 metafile = true
 
 [[files]]
diff --git a/client_pack/mods/spell-engine.pw.toml b/client_pack/mods/spell-engine.pw.toml
index 3fb91bf..c70faea 100644
--- a/client_pack/mods/spell-engine.pw.toml
+++ b/client_pack/mods/spell-engine.pw.toml
@@ -1,13 +1,13 @@
-name = "Spell Engine"
-filename = "spell_engine-fabric-1.10.0+1.21.1.jar"
+name = "spell-engine"
+filename = "spell_engine-1.7.0+1.21.1.jar"
 side = "both"
 
 [download]
-url = "https://cdn.modrinth.com/data/XvoWJaA2/versions/o4Wlwal9/spell_engine-fabric-1.10.0%2B1.21.1.jar"
+url = "https://cdn.modrinth.com/data/XvoWJaA2/versions/jMneACVL/spell_engine-1.7.0%2B1.21.1.jar"
 hash-format = "sha512"
-hash = "2152e363c941de78d33979595579dda2f4e1aa19c82e48c149ac0dcbb14779863fbc1702e82e79f8f81202dc2592e05a10f1af2ff309c543f964d59b20ec15b3"
+hash = "fb2ac83db458acf34e6da7bbc2896f602893a2e6c4f35239c838fe8fab3e09819a038f8623fe6b4d041890fb4d7fb0c20a16f40fba8e159d58fdd85a4ff19017"
 
 [update]
 [update.modrinth]
 mod-id = "XvoWJaA2"
-version = "o4Wlwal9"
+version = "jMneACVL"
diff --git a/client_pack/pack.toml b/client_pack/pack.toml
index 944435b..a9f1a7d 100644
--- a/client_pack/pack.toml
+++ b/client_pack/pack.toml
@@ -6,7 +6,7 @@ pack-format = "packwiz:1.1.0"
 [index]
 file = "index.toml"
 hash-format = "sha256"
-hash = "4b4a4de62ab680313cc220e87dc8c33b37ce6e3df74f3ab61bca026c7915caae"
+hash = "337bace4ded30e94b6d24f1845b082ed7484bf585bc4c80c45a25d03c89e8bb5"
 
 [versions]
 fabric = "0.19.3"
diff --git a/server_pack/config/modernfix-mixins.properties b/server_pack/config/modernfix-mixins.properties
new file mode 100644
index 0000000..a4ccd67
--- /dev/null
+++ b/server_pack/config/modernfix-mixins.properties
@@ -0,0 +1,5 @@
+# FKRPG ModernFix overrides — disable problematic mixins for 1.21.1 Fabric with SpellEngine 1.7 + Tectonic
+mixin.perf.dynamic_resources=false
+mixin.perf.cache_blockstate_cache_arrays=false
+mixin.perf.faster_texture_stitching=false
+mixin.perf.dynamic_dfu=false
diff --git a/server_pack/index.toml b/server_pack/index.toml
index 97497e0..eaf165a 100644
--- a/server_pack/index.toml
+++ b/server_pack/index.toml
@@ -606,7 +606,7 @@ metafile = true
 
 [[files]]
 file = "mods/spell-engine.pw.toml"
-hash = "4f4ea97eb16d0d7e6eee52581ffaf13977f9354de8903f40998f9f187ec8133b"
+hash = "12ee8e8883888e0d8694230665816228de786452d0888de0c2f87b0a1bc04a47"
 metafile = true
 
 [[files]]
diff --git a/server_pack/mods/spell-engine.pw.toml b/server_pack/mods/spell-engine.pw.toml
index 3fb91bf..c70faea 100644
--- a/server_pack/mods/spell-engine.pw.toml
+++ b/server_pack/mods/spell-engine.pw.toml
@@ -1,13 +1,13 @@
-name = "Spell Engine"
-filename = "spell_engine-fabric-1.10.0+1.21.1.jar"
+name = "spell-engine"
+filename = "spell_engine-1.7.0+1.21.1.jar"
 side = "both"
 
 [download]
-url = "https://cdn.modrinth.com/data/XvoWJaA2/versions/o4Wlwal9/spell_engine-fabric-1.10.0%2B1.21.1.jar"
+url = "https://cdn.modrinth.com/data/XvoWJaA2/versions/jMneACVL/spell_engine-1.7.0%2B1.21.1.jar"
 hash-format = "sha512"
-hash = "2152e363c941de78d33979595579dda2f4e1aa19c82e48c149ac0dcbb14779863fbc1702e82e79f8f81202dc2592e05a10f1af2ff309c543f964d59b20ec15b3"
+hash = "fb2ac83db458acf34e6da7bbc2896f602893a2e6c4f35239c838fe8fab3e09819a038f8623fe6b4d041890fb4d7fb0c20a16f40fba8e159d58fdd85a4ff19017"
 
 [update]
 [update.modrinth]
 mod-id = "XvoWJaA2"
-version = "o4Wlwal9"
+version = "jMneACVL"
diff --git a/server_pack/pack.toml b/server_pack/pack.toml
index c9109d5..ab50712 100644
--- a/server_pack/pack.toml
+++ b/server_pack/pack.toml
@@ -6,7 +6,7 @@ pack-format = "packwiz:1.1.0"
 [index]
 file = "index.toml"
 hash-format = "sha256"
-hash = "9f0579ddad97ffd88d984867db2f85e9280a11b88397de2ba1dd45ee094f9c4b"
+hash = "1c7973651e60dc5e4ab7fc6e5187c4c7851d8ffbff90f60f58894bd4d000b21f"
 
 [versions]
 fabric = "0.19.3"