Your JSON Worfklows are all repeats....

[Kaotic3]

https://github.com/Lightricks/ComfyUI-LTXVideo/tree/master/assets

These are not different, they all contain the same prompt and material. I don't know how they came to be like that.

I got a text one from here:

https://comfyanonymous.github.io/ComfyUI_examples/ltxv/ltxv_image_to_video.json

And the video one here:

https://comfyanonymous.github.io/ComfyUI_examples/ltxv/ltxv_image_to_video.json

Then somehow got twisted around and came here and spent 30 minutes thinking I had lost my mind because every time I loaded a different workload nothing would change...

It's easy to miss, because you changed the sampler at the top of the file - you just didn't change anything else!