Comfy LTX/H3 VRAM Spike Causes Freezes
Dapper_Astronaut_603 · reddit · 2026-08-17
Users report VRAM spikes to 99% and system freezes when generating LTX or Minimax H3 videos in Comfy Desktop across different hardware configs (3090/4090). Restarting Comfy stabilizes VRAM usage at 70-80%, suggesting a memory leak. Troubleshooting including disabling custom nodes and adjusting VRAM reserve flags has failed.
Related event: ComfyUI LTX/MiniMax H3 Video Runs Hit VRAM Blowups, Suspected Memory Leak(2 posts)→
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