H3's latent upscaler loads through the H3 module (ComfyUI's loader has no branch for it); an upscale resizes H3's anchor pin so pass 2 stays pinned. FunPack Sampler takes an optional wired schedule, run exactly as written. New preset: H3 Reference to Video + second pass. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>