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+# WeirdPerformance 2.4-B — GC Safe Sweep test
+
+This is an A/B test companion for the validated WeirdPerformance 2.4-A DLL.
+
+- `weirdperformance.dll` = unchanged 2.4-A baseline
+- `weirdperformance_gc24b.dll` = only experimental delta: incremental Lua `rootgc` sweep
+
+Load both DLLs. Do not replace the 2.4-A DLL with the companion.
+
+WoW's native mark, userdata/string sweep, shrink, finalizers, and the 2.4-A hybrid allocator remain in place. Only the main rootgc sweep is split into 50,000-object chunks.
+
+Restart safety enters native-GC passthrough before `CGGameUI_Shutdown`, reconnects any split list first, and re-enables the experiment only after `Player_LoadScriptFunctions`. The luaC_link birth-mark byte is ownership-checked; if it cannot be acquired, that cycle stays native.
+
+Scope: WoW 1.12.1 build 5875 test only.