diff --git a/comfy/model_management.py b/comfy/model_management.py
index 39b4aa483..07bc8ad67 100644
--- a/comfy/model_management.py
+++ b/comfy/model_management.py
@@ -1148,6 +1148,7 @@ def reset_cast_buffers():
     LARGEST_CASTED_WEIGHT = (None, 0)
     for offload_stream in STREAM_CAST_BUFFERS:
         offload_stream.synchronize()
+    synchronize()
     STREAM_CAST_BUFFERS.clear()
     soft_empty_cache()