Artifacts in MiniMax H3 Workflow? Prompt Structure and Config Troubleshooting
Tricky_System4911 · reddit · 2026-08-07
ComfyUI MiniMax H3 Video Generation Troubleshooting
A user encountered severe artifacting issues while generating video using the default MiniMax H3 R2VA workflow in ComfyUI on an RTX 3090 (32GB RAM). The problem persisted even at 720p resolution without changing any settings.
- Prompt Structure: The user shared a structured prompt generated by Kimi K2.5, which included detailed subject definitions, retention analysis, and shot-by-shot descriptions.
- Scene Description: The prompt attempts to generate a fast-paced MMA fight video inside a UFC octagon, requiring strict preservation of the two female characters' facial features during dynamic motion.
- Core Issue: The complex action interaction and strict character retention requirements might be causing the model to collapse and produce artifacts.
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