diff --git a/conductor/tracks/ui_performance_20260223/plan.md b/conductor/tracks/ui_performance_20260223/plan.md
index 7434abd..3187353 100644
--- a/conductor/tracks/ui_performance_20260223/plan.md
+++ b/conductor/tracks/ui_performance_20260223/plan.md
@@ -25,7 +25,7 @@
 - [x] Task: Build the Diagnostics Panel in Dear PyGui 30d838c
     - [x] Sub-task: Write Tests (verify panel components render)
     - [x] Sub-task: Implement Feature (plots, stat readouts in `gui.py`)
-- [~] Task: Identify and fix main thread performance bottlenecks
-    - [ ] Sub-task: Write Tests (reproducible "heavy" load test)
-    - [ ] Sub-task: Implement Feature (refactor heavy logic to workers)
+- [x] Task: Identify and fix main thread performance bottlenecks c2f4b16
+    - [x] Sub-task: Write Tests (reproducible "heavy" load test)
+    - [x] Sub-task: Implement Feature (refactor heavy logic to workers)
 - [ ] Task: Conductor - User Manual Verification 'Phase 3: Diagnostics UI and Optimization' (Protocol in workflow.md)
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