diff --git a/crates/ml/src/cuda_pipeline/gpu_dqn_trainer.rs b/crates/ml/src/cuda_pipeline/gpu_dqn_trainer.rs
index 453ff8054..9dcd08375 100644
--- a/crates/ml/src/cuda_pipeline/gpu_dqn_trainer.rs
+++ b/crates/ml/src/cuda_pipeline/gpu_dqn_trainer.rs
@@ -403,9 +403,9 @@ impl GpuDqnTrainer {
         let b = config.batch_size;
         let total_params = compute_total_params(&config);
 
-        // Disable event tracking — required for CUDA Graph capture (no CudaEvents
-        // inside captured regions). Safe: single stream, explicit ordering.
-        unsafe { stream.context().disable_event_tracking(); }
+        // Event tracking: kept ENABLED during normal ops (buffer allocation, DtoD).
+        // DISABLED only during CUDA Graph capture (in capture_training_graph).
+        // Global disable pollutes the context for other tests/models.
 
         // Stack size for the training kernel: ~46KB/thread with NUM_ATOMS=51,
         // ~12KB/thread with NUM_ATOMS=11. DIST_SIZE(SCRATCH1_DIM=256) * 4 = 11KB