stable-fast now support instantid pipeline

[shivshankar11]

stable-fast is able to optimize InstantID pipeline and achieves a 1.8x speedup!
https://github.com/chengzeyi/stable-fast/blob/main/examples/optimize_instant_id_pipeline.py

[nosiu]

Yea saw that, I just don't see any gain here. They said there is a warm-up stage at the beginning so the first iteration takes longer and with LCM Lora you are generating quality pictures in 1 -2 steps.
Does anyone have any convincing arguments?

[shivshankar11]

If adding support for stable fast is not impacting anything in negative way then should include it, 1.8x speed is lot to be left on table if someone is video faceswaping.
I think stablefast also has memory optimization, 1-1.5gb vram.
Btw can pipeline support unet and vae as input instead of checkpoint?