diff --git a/invokeai/backend/model_management/models/base.py b/invokeai/backend/model_management/models/base.py
index 78685fb6f8..08c7475c69 100644
--- a/invokeai/backend/model_management/models/base.py
+++ b/invokeai/backend/model_management/models/base.py
@@ -454,9 +454,9 @@ class IAIOnnxRuntimeModel:
 
         def __setitem__(self, key: str, value: np.ndarray):
             new_node = numpy_helper.from_array(value)
-            set_external_data(new_node, location="in-memory-location")
+            # set_external_data(new_node, location="in-memory-location")
             new_node.name = key
-            new_node.ClearField("raw_data")
+            # new_node.ClearField("raw_data")
             del self.model.proto.graph.initializer[self.indexes[key]]
             self.model.proto.graph.initializer.insert(self.indexes[key], new_node)
             self.model.data[key] = OrtValue.ortvalue_from_numpy(value)
@@ -491,7 +491,7 @@ class IAIOnnxRuntimeModel:
 
         def __setitem__(self, key: str, value):
             index = self.indexes[key]
-            del self.raw_proto[index]
+            # del self.raw_proto[index]
             self.raw_proto.insert(index, value)
 
         # __delitem__
@@ -533,9 +533,9 @@ class IAIOnnxRuntimeModel:
                 npt = numpy_helper.to_array(tensor)
                 orv = OrtValue.ortvalue_from_numpy(npt)
                 self.data[name] = orv
-                set_external_data(tensor, location="in-memory-location")
+                # set_external_data(tensor, location="in-memory-location")
                 tensor.name = name
-                tensor.ClearField("raw_data")
+                # tensor.ClearField("raw_data")
 
         self.nodes = self._access_helper(self.proto.graph.node)
         self.initializers = self._access_helper(self.proto.graph.initializer)
@@ -551,8 +551,8 @@ class IAIOnnxRuntimeModel:
             #(trimmed_model, external_data) = buffer_external_data_tensors(self.proto)
             sess = SessionOptions()
             #self._external_data.update(**external_data)
-            sess.add_external_initializers(list(self.data.keys()), list(self.data.values()))
-            self.session = InferenceSession(self.proto.SerializeToString(), providers=[self.provider], sess_options=sess)
+            # sess.add_external_initializers(list(self.data.keys()), list(self.data.values()))
+            self.session = InferenceSession(self.proto.SerializeToString(), providers=['CUDAExecutionProvider', 'CPUExecutionProvider'], sess_options=sess)
             #self.session = InferenceSession("tmp.onnx", providers=[self.provider], sess_options=self.sess_options)
 
     def release_session(self):