Fix ComfyUI High RAM Usage: Disable Pinned Memory
Better-Interview-793 · reddit · 2026-08-24
A user running large models like MiniMax H3 locally faced excessive RAM usage (25GB) and hostbuffer crash errors. By adding the --disable-pinned-memory flag when launching ComfyUI, the issues were completely resolved.
This change significantly reduced memory usage, eliminated errors, and surprisingly made generation faster and smoother. It's a recommended fix for anyone running large models and experiencing similar high RAM usage or crashes.
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