High-fidelity Flux.1-dev canvas workflow with dual text encoders (CLIP L + T5xxl) and FP8 model precision. Optimized for intricate skin textures, natural folds, and anatomy accuracy.
Why CFG 1.0 on Flux: Flux.1 uses guidance embeddings directly inside its diffusion transformer backbone. Traditional classifier-free guidance scaling should stay strictly at 1.0 or 3.5 (via FluxGuidance node). Setting standard CFG > 1.0 will over-sharpen facial details and introduce plastic sheen. T5 VRAM management: Load T5xxl in fp8 on 12GB cards or offload to system memory with --lowvram to prevent cudaMalloc errors.
RTX 4070 (12GB VRAM): ~11.4 GB VRAM with FP8 weights. Generation time: 28 seconds at 1024x1024. RTX 4090 (24GB VRAM): 11 seconds in full BF16.