MOSS Image + NVIDIA PiD skips VAE decoding to spit out 4K images in seconds
TimeTruth2490 · reddit · 2026-10-31
- The trick: The author chains MOSS Image (whose FLUX.2-compatible VAE works out of the box) with NVIDIA's PiD (Pixel Diffusion Decoder): render at 1/4 target resolution using MOSS Image plus akhaliq's 4-step LoRA, then let PiD draw the full 4× larger image from the small latent in 4 more steps.
- Why it matters: PiD replaces the traditional VAE decode + separate upscaler pipeline, unifying decoding and upsampling into a single generative process that turns low-res latents into sharp 2K+/4K images in under a second.
- Resources: A deep dive on Hugging Face ships two ComfyUI workflows (local and cloud), a Diffusers script, and 100 sample images from the cloud workflow.
- Caveat: PiD output is great on some images and 'just good' on others, but the speed gain at high resolutions is the real draw.
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