Halve Local Video Gen Time on RTX 3060 with SageAttention
MustBeSomethingThere · reddit · 2026-08-05
A developer shared optimization tips for running the MiniMax H3 video model using ComfyUI on an RTX 3060 12GB + 64GB RAM setup.
Performance Optimization
- By enabling --use-sage-attention and --enable-triton-backend, video generation time was cut by over 50%.
- Generating a 0.4MP resolution video at 13 steps takes about 7 minutes in this low-VRAM environment.
Model & Generation Details
- The workflow utilizes quantized model versions (minimaxh3fl2vaprunedint8 and qwen3vl32bminimaxh3int4).
- The author demonstrated a highly creative Matrix-style prompt featuring detailed shot descriptions, soundscape design, and non-diegetic music instructions.
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