diff --git a/README.md b/README.md
index f5087d3..cf95f9f 100644
--- a/README.md
+++ b/README.md
@@ -209,7 +209,7 @@ You should try to add object description to negative prompt and describe empty s
 - `CLIP`: PowerPaint CLIP that should be passed from PowerPaintCLIPLoader node.
 - `fitting`: PowerPaint fitting degree.
 - `function`: PowerPaint function, see its [page](https://github.com/open-mmlab/PowerPaint) for details.
-- `save_memory`: If this option is set to `max`, the attention module splits the input tensor in slices to compute attention in several steps. This is useful for saving some memory in exchange for a decrease in speed.
+- `save_memory`: If this option is set, the attention module splits the input tensor in slices to compute attention in several steps. This is useful for saving some memory in exchange for a decrease in speed. If you run out of VRAM or get `Error: total bytes of NDArray > 2**32` on Mac try to set this option to `max`.
 
 When using certain network functions, the authors of PowerPaint recommend adding phrases to the prompt:
 
diff --git a/brushnet_nodes.py b/brushnet_nodes.py
index b2c190e..d1f39e2 100644
--- a/brushnet_nodes.py
+++ b/brushnet_nodes.py
@@ -189,7 +189,7 @@ class PowerPaint:
                         "scale": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 10.0}),
                         "start_at": ("INT", {"default": 0, "min": 0, "max": 10000}),
                         "end_at": ("INT", {"default": 10000, "min": 0, "max": 10000}),
-                        "save_memory": (['auto', 'max'], ),
+                        "save_memory": (['none', 'auto', 'max'], ),
                      },
         }
     
@@ -292,7 +292,8 @@ class PowerPaint:
         control_guidance_start = start_at
         control_guidance_end = end_at
 
-        powerpaint['brushnet'].set_attention_slice(save_memory)
+        if save_memory != 'none':
+            powerpaint['brushnet'].set_attention_slice(save_memory)
 
         add_brushnet_patch(model, 
                            powerpaint['brushnet'],