--disable-async-offload ERROR

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

If I add the --disable-async-offload argument when running Comfyui, the video appears as a grayscale result.
If you encode any image for testing and then decode it, the result will also be grayscale.

### Actual Behavior

If I add the --disable-async-offload argument when running Comfyui, the video appears as a grayscale result.
If you encode any image for testing and then decode it, the result will also be grayscale.

### Steps to Reproduce

### Debug Logs

```powershell
[INFO] [ComfyUI-Manager] All startup tasks have been completed.
[INFO] got prompt
[INFO] Prompt executed in 0.00 seconds
```

### Other

This issue occurs in 0.30.0. It does not occur in earlier versions.

The reason I use the --disable-async-offload argument is that LTX 2.3 experiences slowdowns when using small resolutions with a low number of frames. For example, the generation speed of 1 frame at 512x512 resolution is similar to that of 401 frames at 512x512 resolution.

(My computer has an RTX 5090)