diff --git a/common/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java b/common/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java
index a57d4676..85d4f032 100644
--- a/common/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java
+++ b/common/src/main/java/org/embeddedt/modernfix/core/config/ModernFixEarlyConfig.java
@@ -165,6 +165,7 @@ public class ModernFixEarlyConfig {
             .put("mixin.feature.stalled_chunk_load_detection", false)
             .put("mixin.perf.blast_search_trees.force", false)
             .put("mixin.bugfix.restore_old_dragon_movement", false)
+            .put("mixin.perf.worldgen_allocation", false) // experimental
             .put("mixin.feature.cause_lag_by_disabling_threads", false)
             .put("mixin.perf.clear_mixin_classinfo", false)
             .put("mixin.perf.deduplicate_climate_parameters", false)