Character LoRA severely reduces motion and ignores action prompts (ltx-2.3)

[dkspwndj]

Hi everyone,

I recently trained a character LoRA for the ltx-2.3 model, but I'm running into a frustrating issue during inference and was hoping to get some advice.

When I apply the character LoRA at a weight of 1.0, the generated output loses almost all movement, resulting in very static videos. Furthermore, it seems to completely override or ignore most of my text prompts.

I tried lowering the LoRA weight down to 0.5 to see if it would give the base model more room to generate motion. However, even at 0.5, simple action prompts like "walking" are still almost entirely ignored, and the character remains mostly stationary.

My questions:
Has anyone else experienced this severe loss of motion and prompt adherence when using character LoRAs with ltx-2.3?
Are there specific training parameters (like rank/alpha, learning rate, or dataset captioning methods) that help preserve the base model's motion capabilities?
Are there any recommended inference settings or workarounds to fix this?

Any insights, tips, or guidance would be greatly appreciated!
Thank you.

https://github.com/user-attachments/assets/5eae534d-fcc1-40ad-9b02-37ba1f47b584