ComfyUI

Download and install ComfyUI on Windows.

For real-time updates on verified features and version compatibility, refer to the Juice Application Matrix.

Supported PyTorch Versions

To ensure compatibility with Juice, you must use specific PyTorch builds.

• Supported CUDA Versions: cu128, cu126.
• Unsupported Versions: 13, 13.1, 13.2.

Installing the Correct PyTorch Build

If you are using a manual or Conda-based installation, run the following command to install the supported cu128 release build:

pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu128

Running ComfyUI with Juice

When using a Portable Installation, it is a critical requirement to navigate into the internal ComfyUI folder before executing the run command. This ensures all relative paths for models and custom nodes are resolved correctly.

Portable Installation Execution

cd C:\Path\To\Your\ComfyUI_windows_portable\ComfyUI
juice run python.exe main.py --disable-cuda-malloc 

tip

The --disable-cuda-malloc argument is specified for optimal performance with Juice. ComfyUI will still run through Juice without this argument but responses will take longer to generate.

Desktop Application Execution

Run ComfyUI with Juice on Windows using the default application path:

juice run "%USERPROFILE%\AppData\Local\Programs\@comfyorgcomfyui-electron\ComfyUI.exe" --disable-cuda-malloc

Replace %USERPROFILE% with the path to your user directory on Windows, e.g. C:\Windows\joeb, if you prefer.

RTX 5080 Stability

For 16GB VRAM cards, adding --lowvram, --reserve-vram 2.0 and --use-pytorch-cross-attention to your run command is highly recommended to prevent Out of Memory (OOM) errors during video generation.

Active Paths

Activate the ComfyUI directory to run it through Juice automatically when a Juice session is created:

juice session add-path %USERPROFILE%\AppData\Local\Programs\@comfyorgcomfyui-electron

Replace %USERPROFILE% with the path to your user directory on Windows, e.g. C:\Users\joeb, if you prefer.