Seeking VRAM Optimization for LTX Video Model on Single GPU
Ecstatic_Sale1739 · reddit · 2026-07-12
The author encountered an out-of-memory (OOM) issue when trying to run the LTX 2.3 dev model (with distill lora) using ComfyUI on a single RTX 5090 to generate videos. Currently, using the NVFP4 model version (20GB), LoRA (7GB), and Gemma 3 encoder (10GB) consumes over 30GB of VRAM in total. Even switching to the GGUF version doesn't fully fit into memory. The author is seeking configuration advice for VRAM optimization.
Related event: RTX 5090 Faces OOM Running Video Models in ComfyUI(2 posts)→
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