diff --git a/comfy/model_patcher.py b/comfy/model_patcher.py
index 215784874..9b76b87b6 100644
--- a/comfy/model_patcher.py
+++ b/comfy/model_patcher.py
@@ -761,6 +761,8 @@ class ModelPatcher:
                     key = "{}.{}".format(n, param)
                     self.unpin_weight(key)
                     self.patch_weight_to_device(key, device_to=device_to)
+                if comfy.model_management.is_device_cuda(device_to):
+                    torch.cuda.synchronize()
 
                 logging.debug("lowvram: loaded module regularly {} {}".format(n, m))
                 m.comfy_patched_weights = True