LightX2V 4-step LoRA cuts MiniMax H3 render time from 20 to 11 minutes

On an RTX 4090, a 15-second 1-megapixel MiniMax H3 clip rendered in ~11 minutes with the LightX2V 4-step LoRA, down from ~20 minutes. Running 4 steps for both video and audio proved impractical — image quality could break down and audio stayed under-denoised.