Enabling dynamic VRAM cuts LTX 2.3 video generation to 168s on an AMD R9700
xdcfret1 · reddit · 2026-07-27
A Reddit user reports that enabling --enable-dynamic-vram on an AMD AI Pro R9700 GPU dramatically improved LTX 2.3 I2V performance.
- Before: generation was effectively unusable, with outputs getting stuck at Requested to load LTXAV and taking 7–10 minutes for short clips.
- After turning on dynamic VRAM:
- 11s at 480p: 168s
- 10s at 720p: 191s
- 10s at 1080p: 322s
The post suggests dynamic VRAM management can make a huge difference for this workflow on AMD hardware.
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