ComfyUI LTX/MiniMax H3 Video Runs Hit VRAM Blowups, Suspected Memory Leak

Users on various PCs (RTX 3090/4090) report that generating LTX or MiniMax H3 videos in Comfy Desktop sends VRAM soaring until the app freezes. Another ComfyUI user finds MiniMaxH3 reliably hits CUDA out-of-memory after 20-30 successful generations, suggesting a memory leak.

2026-08-17 ~ 2026-08-17 · 2 related posts

• ComfyUI OOMs after 20 generations: MiniMaxH3 suspected memory leak — reicaden · 2026-08-17
• Comfy LTX/H3 VRAM Spike Causes Freezes — Dapper_Astronaut_603 · 2026-08-17