Reactor Running on RTX 5090

[qrtise]

Need Help Getting Reactor Running on RTX 5090

I've got a new rig with an RTX 5090. Reactor was working fine on my old system, but I can't get it running on the new one—whether using my previous ComfyUI setup or a clean install. The issue seems to be related to Python.

I'm currently running:

Standalone package (fresh install)
Nightly PyTorch 2.7 (cu128)
Python 3.13.2
Has anyone successfully gotten Reactor working on an RTX 5090? If so, could you share a step-by-step guide or any insights? I'd really appreciate the help!

[Gourieff]

Python 3.13.2

Yes, you should downgrade Python to 3.12 or 3.11

[qrtise]

Can you tell me how I do that, please?

[Gourieff]

I made some research and I think you can keep 3.13
You should install onnx-weekly into your ComfyUI build along with py313 Insightface whl:
https://github.com/Gourieff/Assets/blob/main/Insightface/insightface-0.7.3-cp313-cp313-win_amd64.whl

pip install https://github.com/Gourieff/Assets/raw/main/Insightface/insightface-0.7.3-cp313-cp313-win_amd64.whl

Even if it shows you that onnx build failed - it's ok, because you get Insightface installed successfully
and then you just need to install onnx-weekly instead of simple onnx:

pip install onnx-weekly

UPD:

1. So, at first, you should install onnx-weekly: python_embeded\python.exe -m pip install onnx-weekly
2. Then go to python_embeded\Lib\site-packages and remove onnx-weekly-1.18.dev202503XX.dist-info folder
3. Download https://github.com/Gourieff/Assets/blob/main/ONNX/onnx-weekly-1.18.dev.dist-info--to--onnx-1.17.dist-info.zip and unzip into python_embeded\Lib\site-packages
4. Install Insightface whl python_embeded\python.exe -m pip install https://github.com/Gourieff/Assets/raw/main/Insightface/insightface-0.7.3-cp313-cp313-win_amd64.whl
5. Profit 😎

[Gourieff]

Useful discussion about the issue Comfy-Org/ComfyUI#6643

[repeatmlg]

hello Gourieff i've installed Reactor nodes in manager but can't read after installed, and i've done following your step with installed reactor in manager, but still can't read Re Actor Nodes

[Gourieff]

Suitable build for 50xx series https://github.com/comfyanonymous/ComfyUI/releases/download/latest/ComfyUI_cu128_50XX.7z (Python 3.12)

[repeatmlg]

thankyou very much man i've done following step by step wich you share. and i downloaded a new released comfy ui for GPU 50 Series with python 3.12. it's works properly. Great Job!!