ComfyUI Performance: Upgrading to CUDA 13 and Pitfalls

ayakitodev · reddit · 2026-08-05

The author notes that upgrading to CUDA 13 is required to take full advantage of recent ComfyUI optimizations. However, manually updating dependencies like Torch and numpy can break environment stability, so it should only be done by advanced users.

For beginners, a Windows portable fork with CUDA 13 and Xformers pre-installed is recommended. It's also advised to strip down custom nodes to the core manager to minimize conflicts.

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