Wan 2.1 SCAIL-2 Character Replacement Struggles: Identity Drift, Plastic Skin, 15 Min for 5s
DragonfruitNo9822 · reddit · 2026-11-15
A developer running Wan 2.1 14B SCAIL-2 character replacement in ComfyUI on an RTX 6000 Ada 48GB is asking the community for quality help.
Setup: SCAIL-2 FP16 + LightX2V 480p Distill LoRA + SCAIL-2 DPO LoRA, SAM3.1 tracking, 720×1280, Base+Extend workflow (81 frames, 5-frame overlap), Turbo mode on.
Problems:
- Facial identity isn't consistent; skin looks plastic and overly smooth
- Hair looks artificial and clumped; body movements sometimes distort
- A 5-second video takes 15 minutes to generate
No answers yet — but it's a real-world data point that SCAIL-2-style character replacement pipelines still struggle with identity preservation and realism.
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