Troubleshooting Mosaic Grid Output When Running MiniMax H3 in ComfyUI
Current-Row-159 · reddit · 2026-08-12
A developer encountered an anomaly while running the MiniMax H3 video model in ComfyUI on an RTX 4090: instead of a normal video, the output was a grid of small square tiles, each decoded individually.
After verifying the correct official VAE was loaded, the developer hypothesized that the decode step bypassed the video-tiler or hit a generic VAE Decode node unable to read H3 latents, causing spatially split latents to fail reassembly. The post seeks community solutions for this specific tiling issue.
Related event: Troubleshooting MiniMax H3 Grid Mosaic Output in ComfyUI(2 posts)→
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