Mixed FP8 and NVFP4 quantization for SDXL, Wan 2.2, Qwen Image, Z-Image, FLUX, and FLUX.2 diffusion models in ComfyUI
https://github.com/thepororo/ComfyUI-NVFP4-Quantizer
git clone https://github.com/thepororo/ComfyUI-NVFP4-Quantizer
comfy node install nvfp4-universal-quantizer