Flux.2 Klein 9B identity drift: seeking fixes for cinematic character consistency

RecordEmbarrassed787 · reddit · 2026-09-07

A creator building a cinematic documentary pipeline with Flux.2 Klein 9B (ComfyUI + fal.ai API on an RTX 5090 Laptop) reports that character identity collapses whenever prompts shift to complex combat scenes or dramatic lighting — the native ReferenceLatent conditioning can't anchor facial features.

Current pipeline: reference image → upscale to 1MP → VAE Encode → ReferenceLatent conditioning → sampling via fal.ai → decode. No custom LoRA is used yet.

Options being weighed: masking the face before VAE Encode, trying ReferenceLatentPlus, or dropping fal.ai entirely and running a local Flux-PuLID/FaceDetailer pass to restore identity after API output.

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

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