ReActorFaceSwap is Using CPU Instead of GPU

[wcchuang0323]

Custom Node Testing

• I have tried disabling custom nodes and the issue persists (see how to disable custom nodes if you need help)

Your question

When using ReActorFaceSwap, I noticed that during the step "STATUS - Ensuring NSFW detection model exists...", the GPU usage was around 15% according to Task Manager. However, starting from the next step, "STATUS - Analyzing Source Image...", the CPU usage jumps to 100%, RAM to 80%, and GPU drops to 0%. I’m not sure why the GPU isn’t being used from this step onward. This might be the reason why video processing is extremely slow. Is there any way to fix this issue?

Logs

Other

No response

[elemich]

pip install onnxruntime-gpu
git clone https://codeberg.org/Gourieff/comfyui-reactor-node

[wcchuang0323]

I looked carefully at the installation log and noticed that several packages had failed to install. After manually reinstalling them, the current performance during video generation has improved — CPU usage reaches only 60%, RAM usage is around 12 GB, and on the GPU side, CUDA utilization is about 66% with 4 GB of VRAM in use. The processing time for a 10-second video has dropped from 300 seconds to 100 seconds, which is a big improvement, but I still don’t understand why the GPU isn’t being fully utilized (not reaching 100%)