ComfyUI disconnects after 2–3 runs when using GGUF models (not with FP8)

[JavadZohani]

Hi, I’ve recently been running into an issue when using GGUF models in ComfyUI.
On the first run (image generation or editing), everything works fine without any errors. But after two or sometimes three runs, ComfyUI disconnects/reconnects and becomes unusable.

I’ve tested this with multiple GGUF models (like Flux.1, Qwen, and others), and the same problem happens every time. Interestingly, this issue does not occur when I use FP8 models — they work normally without disconnects.

This problem didn’t exist for me before the recent ComfyUI update, so it seems to have appeared only after that.
Because of this, I’ve had to temporarily switch back to FP8 models, but I’d really like to continue using GGUF if possible.

[RhaoG]

i can second this. something is wrong.