15s MH3 video takes 90 min on a 4080 Super while others claim 8 min on laptops
redpandafire · reddit · 2026-10-08
Reddit user redpandafire reports that generating a 15-second MH3 video at 1MP takes 1h30m on a 4080 Super desktop with 64GB RAM, while others in the same thread claim 8 minutes on a 16GB 4080 laptop.
They use up-to-date ComfyUI portable (Python 3.12) with a very basic workflow and no special attention implementations, and suspect attention choice or workflow config explains the gap. The post asks the community for troubleshooting pointers.
Related event: Reddit Users Compare Local MiniMax H3 Video Generation Speeds(2 posts)→
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