It works with my NVFP4 comfyUI loader here https://github.com/Apache0ne/ComfyUI-SDXLNVFP4
nvfp4cliptestSD15.json the workflow nvfp4cliptestSD15.json
It works with my NVFP4 comfyUI loader here https://github.com/Apache0ne/ComfyUI-SDXLNVFP4
nvfp4cliptestSD15.json the workflow nvfp4cliptestSD15.json