Stable Diffusion Flux Crush

[Marcinkorokowski]

I use Stable Diffusion Flux flux1-dev-bnb-nf4.safetensors, every time I first run it I can generate the prompt without any problem, but if I make changes to the prompt and want to generate it, it stops working (screenshot). Sometimes it stops working at 95% of generation. I don't know what to do with it anymore.

My PC:
GPU: RTX 4070 SUPER
RAM: 32GB
CPU: i9-9900K 3.60 GHz