diff --git a/onediff_comfy_nodes/utils/model_patcher.py b/onediff_comfy_nodes/utils/model_patcher.py
index b012b2b38..15d0937e2 100644
--- a/onediff_comfy_nodes/utils/model_patcher.py
+++ b/onediff_comfy_nodes/utils/model_patcher.py
@@ -541,6 +541,7 @@ def __init__(
         else:
             self.current_device = current_device
 
+        self.model_lowvram = getattr(model, "model_lowvram", False)
 
 def get_mixed_speedup_class(module_cls):
     class MixedSpeedUpModelPatcher(OneFlowSpeedUpModelPatcher, module_cls):
@@ -584,6 +585,8 @@ def clone(self):
             n.object_patches = self.object_patches.copy()
             n.model_options = copy.deepcopy(self.model_options)
             n.model_keys = self.model_keys
+            
+            n.model_lowvram = self.model_lowvram
             return n
 
     return MixedSpeedUpModelPatcher