Test: Running MiniMax H3 Video Generation on 12GB VRAM Stalls Over 5 Seconds
Silver-Spot-2763 · reddit · 2026-08-08
A developer tested the standard ComfyUI image-to-video (R2V) workflow for MiniMax H3 on a 12GB VRAM setup. Results showed that while videos under 5 seconds can be processed (albeit extremely slowly), anything over 5 seconds causes the GPU to lock at 100% usage and hang indefinitely without error. Additionally, attempting to connect audio causes an immediate crash, requiring the audio track to be removed to run.
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