Strange generation behavior on RTX 5080

so, here's the weird thing. I'm using the same GUI, the same Illustrious models (Hassaku, for example), the same CFG settings, sampler, scheduler, resolution, and prompts, but the results are far worse than what I got before on the RTX 3080. There's a lot of mess, body horror, and sketches (even though the negative prompts list everything you need, including "sketch"). Any tips, please?

I can't even generate 1girl without errors; it creates 3 clones and so on. The metadata and settings are THE SAME.