diff --git a/README.md b/README.md
index 6eee1d0d..49362c9e 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Some fixes are based on prior work in various Forge PRs (check commit history an
 is directly derived from Sodium and used under the terms of the LGPL-3.0 license.
 
 ## Development builds (generally stable, but may occasionally have bugs)
-- 1.16.5, both modloaders: https://nightly.link/embeddedt/ModernFix/workflows/gradle/main/Package.zip
+- 1.16.5, both modloaders: https://nightly.link/embeddedt/ModernFix/workflows/gradle/1.16/Package.zip
 - 1.18.2, both modloaders: https://nightly.link/embeddedt/ModernFix/workflows/gradle/1.18/Package.zip
 - 1.19.2, both modloaders: https://nightly.link/embeddedt/ModernFix/workflows/gradle/1.19.2/Package.zip
 - 1.19.4, both modloaders: https://nightly.link/embeddedt/ModernFix/workflows/gradle/1.19.4/Package.zip
diff --git a/build.gradle b/build.gradle
index b1d00bf7..df933485 100644
--- a/build.gradle
+++ b/build.gradle
@@ -175,4 +175,4 @@ tasks.register('checkCleanTag') {
             throw new GradleException('Not a clean tree.')
         }
     }
-}
\ No newline at end of file
+}
diff --git a/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/faster_texture_loading/TextureAtlasMixin.java b/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/faster_texture_loading/TextureAtlasMixin.java
index e986d88c..44b87a55 100644
--- a/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/faster_texture_loading/TextureAtlasMixin.java
+++ b/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/faster_texture_loading/TextureAtlasMixin.java
@@ -106,7 +106,7 @@ public abstract class TextureAtlasMixin {
     }
 
     @Inject(method = "load(Lnet/minecraft/server/packs/resources/ResourceManager;Lnet/minecraft/client/renderer/texture/TextureAtlasSprite$Info;IIIII)Lnet/minecraft/client/renderer/texture/TextureAtlasSprite;",
-        at = @At("HEAD"), cancellable = true)
+        at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/texture/TextureAtlas;getResourceLocation(Lnet/minecraft/resources/ResourceLocation;)Lnet/minecraft/resources/ResourceLocation;"), cancellable = true)
     private void loadFromExisting(ResourceManager resourceManager, TextureAtlasSprite.Info spriteInfo, int storageX, int storageY, int mipLevel, int x, int y, CallbackInfoReturnable<TextureAtlasSprite> cir) {
         if(!usingFasterLoad)
             return;
diff --git a/fabric/src/main/java/org/embeddedt/modernfix/fabric/mixin/perf/dynamic_resources/ModelBakeryMixin.java b/fabric/src/main/java/org/embeddedt/modernfix/fabric/mixin/perf/dynamic_resources/ModelBakeryMixin.java
index e2f4717a..a2586ac1 100644
--- a/fabric/src/main/java/org/embeddedt/modernfix/fabric/mixin/perf/dynamic_resources/ModelBakeryMixin.java
+++ b/fabric/src/main/java/org/embeddedt/modernfix/fabric/mixin/perf/dynamic_resources/ModelBakeryMixin.java
@@ -303,7 +303,7 @@ public abstract class ModelBakeryMixin implements IExtendedModelBakery {
         };
         // bake indigo models
         Stopwatch watch = Stopwatch.createStarted();
-        this.topLevelModels.forEach((key, value) -> {
+        new ArrayList<>(this.topLevelModels.keySet()).forEach(key -> {
             try {
                 this.bake(key, BlockModelRotation.X0_Y0);
             } catch(RuntimeException e) {
diff --git a/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/ctm_resourceutil_cme/ResourceUtilMixin.java b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/ctm_resourceutil_cme/ResourceUtilMixin.java
new file mode 100644
index 00000000..7e5e41b2
--- /dev/null
+++ b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/ctm_resourceutil_cme/ResourceUtilMixin.java
@@ -0,0 +1,35 @@
+package org.embeddedt.modernfix.forge.mixin.bugfix.ctm_resourceutil_cme;
+
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
+import org.embeddedt.modernfix.annotation.RequiresMod;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Mutable;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import team.chisel.ctm.client.util.ResourceUtil;
+
+import java.util.Collections;
+import java.util.Map;
+import java.util.concurrent.ConcurrentMap;
+
+@Mixin(ResourceUtil.class)
+@RequiresMod("ctm")
+@ClientOnlyMixin
+@SuppressWarnings({"rawtypes", "unchecked"})
+public class ResourceUtilMixin {
+    @Shadow @Final @Mutable
+    private static Map metadataCache;
+
+    /**
+     * @author embeddedt
+     * @reason quick fix to prevent rare CMEs
+     */
+    @Inject(method = "<clinit>", at = @At("RETURN"))
+    private static void synchronizeMetadataCache(CallbackInfo ci) {
+        if(!(metadataCache instanceof ConcurrentMap))
+            metadataCache = Collections.synchronizedMap(metadataCache);
+    }
+}