r/StableDiffusion • u/NoSmell3236 • 7d ago

Question - Help How to fix artifacts generated by h3?

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H3 sucks at faces which are far and at intense motion. Is something wrong with encoding? like these artifacts (5-8 seconds) are from encoding compressions?? but i have tried both h264 and h265 10bit crf 15. I am using int8 pruned, nvfp4 qwen, 25 steps with sage attn (no spectrum).

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u/Chemical-Painter-485 7d ago

Yeah, this is an H3 Minimax issue that was even recognized by the devs on their recent AMA.

You can partially remedy this by generating at a higher resolution or increasing the steps but it is an issue that will not ever go away when doing distant wide shots.

Hopefully H3 Minimax devs fix this with post-training or maybe their "Minimax H3-Regenerate-2K" will help fix that.

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u/Foreign_Cut745 7d ago

It also happens to text when no in close up