Flux.2 Klein 9B identity drift: ReferenceLatent breaks down in action scenes

RecordEmbarrassed787 · reddit · 2026-09-07

A filmmaker building a ComfyUI pipeline with Flux.2 Klein 9B via the fal.ai API (reference image → 1MP upscale → VAE Encode → ReferenceLatent conditioning → sampler) reports that character identity dissolves whenever prompts introduce combat scenes or dramatic lighting — native ReferenceLatent can't anchor facial features. With a local RTX 5090 Laptop 16GB, they're weighing face masking before VAE encode, ReferenceLatentPlus, or abandoning the API for a local Flux-PuLID/FaceDetailer pass. No custom LoRA yet.

Related event: Flux.2 Klein 9B Faces Identity Drift in Cinematic Pipelines(2 posts)→

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