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FastVideo's new 4-step H3 LoRA doesn't work in ComfyUI. I made a converter. 6 steps, ~3x faster than stock, and honestly better looking.

This story is from 2026-08-30. It is preserved in the archive; the latest stories are on the live feed.

First 5 seconds is with the 6-step LoRA, next 5 seconds is stock at 20 steps. Same exact prompt, seed, resolution, sage attention and chunk feedforward. 6-step in 2:45, stock 20-step in 7:10. I think the quality difference is pretty clear. Keep in mind, both clips are 544x960. FastVideo dropped the…

Read the full story at r/StableDiffusion ↗

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  1. 2026-08-30 20:41 · r/StableDiffusion
    FastVideo's new 4-step H3 LoRA doesn't work in ComfyUI. I made a converter. 6 steps, ~3x faster than stock, and honestly better looking.

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