diff --git a/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java b/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java
index 2d26e1c2..dd25e237 100644
--- a/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java
+++ b/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java
@@ -24,6 +24,7 @@ public class ModernFixEarlyConfig {
         this.addMixinRule("perf.boost_worker_count", true);
         this.addMixinRule("perf.skip_first_datapack_reload", true);
         this.addMixinRule("perf.parallelize_model_loading", true);
+        this.addMixinRule("perf.parallelize_model_loading.multipart", false);
         this.addMixinRule("perf.trim_model_caches", true);
         this.addMixinRule("bugfix.concurrency", true);
         this.addMixinRule("bugfix.edge_chunk_not_saved", true);
diff --git a/src/main/java/org/embeddedt/modernfix/mixin/bugfix/buggy_tooltip_handlers/ForgeEventFactoryMixin.java b/src/main/java/org/embeddedt/modernfix/mixin/bugfix/buggy_tooltip_handlers/ForgeEventFactoryMixin.java
new file mode 100644
index 00000000..7283e5ba
--- /dev/null
+++ b/src/main/java/org/embeddedt/modernfix/mixin/bugfix/buggy_tooltip_handlers/ForgeEventFactoryMixin.java
@@ -0,0 +1,2 @@
+package org.embeddedt.modernfix.mixin.bugfix.buggy_tooltip_handlers;public class ForgeEventFactoryMixin {
+}
diff --git a/src/main/java/org/embeddedt/modernfix/mixin/perf/parallelize_model_loading/multipart/MultipartMixin.java b/src/main/java/org/embeddedt/modernfix/mixin/perf/parallelize_model_loading/multipart/MultipartMixin.java
new file mode 100644
index 00000000..2664fa9e
--- /dev/null
+++ b/src/main/java/org/embeddedt/modernfix/mixin/perf/parallelize_model_loading/multipart/MultipartMixin.java
@@ -0,0 +1,17 @@
+package org.embeddedt.modernfix.mixin.perf.parallelize_model_loading.multipart;
+
+import net.minecraft.client.renderer.model.multipart.Multipart;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+import java.util.List;
+import java.util.stream.Stream;
+
+@Mixin(Multipart.class)
+public class MultipartMixin {
+    @Redirect(method = "getMaterials", at = @At(value = "INVOKE", target = "Ljava/util/List;stream()Ljava/util/stream/Stream;", ordinal = 0))
+    private Stream makeStreamParallel(List instance) {
+        return instance.parallelStream();
+    }
+}
diff --git a/src/main/java/org/embeddedt/modernfix/mixin/perf/parallelize_model_loading/multipart/VariantListMixin.java b/src/main/java/org/embeddedt/modernfix/mixin/perf/parallelize_model_loading/multipart/VariantListMixin.java
new file mode 100644
index 00000000..09e0d54c
--- /dev/null
+++ b/src/main/java/org/embeddedt/modernfix/mixin/perf/parallelize_model_loading/multipart/VariantListMixin.java
@@ -0,0 +1,32 @@
+package org.embeddedt.modernfix.mixin.perf.parallelize_model_loading.multipart;
+
+import com.mojang.datafixers.util.Pair;
+import net.minecraft.client.renderer.model.IUnbakedModel;
+import net.minecraft.client.renderer.model.RenderMaterial;
+import net.minecraft.client.renderer.model.Variant;
+import net.minecraft.client.renderer.model.VariantList;
+import net.minecraft.util.ResourceLocation;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Overwrite;
+import org.spongepowered.asm.mixin.Shadow;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.Set;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+@Mixin(VariantList.class)
+public abstract class VariantListMixin {
+    @Shadow public abstract List<Variant> getVariants();
+
+    /**
+     * @author embeddedt
+     * @reason Parallelize calls to getMaterials
+     */
+    @Overwrite
+    public Collection<RenderMaterial> getMaterials(Function<ResourceLocation, IUnbakedModel> pModelGetter, Set<Pair<String, String>> pMissingTextureErrors) {
+        List<IUnbakedModel> models = this.getVariants().stream().map(Variant::getModelLocation).distinct().map(pModelGetter).collect(Collectors.toList());
+        return models.parallelStream().flatMap(model -> model.getMaterials(pModelGetter, pMissingTextureErrors).stream()).collect(Collectors.toSet());
+    }
+}
diff --git a/src/main/resources/modernfix.mixins.json b/src/main/resources/modernfix.mixins.json
index 55843f36..a0ea5695 100644
--- a/src/main/resources/modernfix.mixins.json
+++ b/src/main/resources/modernfix.mixins.json
@@ -33,6 +33,8 @@
     "bugfix.concurrency.MinecraftMixin",
     "perf.parallelize_model_loading.ModelBakeryMixin",
     "perf.parallelize_model_loading.OBJLoaderMixin",
+    "perf.parallelize_model_loading.multipart.MultipartMixin",
+    "perf.parallelize_model_loading.multipart.VariantListMixin",
     "perf.trim_model_caches.ModelManagerMixin",
     "perf.async_jei.IngredientListElementFactoryMixin",
     "perf.async_jei.ClientLifecycleHandlerMixin",