ComfyUI becomes unusable overnight with MiniMax H3, causing system freezes
Fit-Association-448 · reddit · 2026-08-19
User reports that their ComfyUI setup with the MiniMax H3 video model went from working perfectly to being completely unusable, causing severe system lag and freezes during generation, especially at higher resolutions. The issues persist even after closing the software, requiring a restart to restore normalcy. Despite updating nodes and ComfyUI, the problem remains. The console logs show multiple deprecation warnings regarding legacy API imports (e.g., ui.js, widgetInputs.js). GPU temperatures appear normal.
Related event: ComfyUI Update Blamed for MiniMax H3 Crashes and Quality Degradation(2 posts)→
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