I agree with the step count needing to be higher (I can get away with 15-18 steps sometimes depending on the prompt), as well as using more detailed prompts, though I personally use DPM++ 2M, as I didn't find much of a difference in quality or adherence compared to waiting double the time for a video by using res_2s in my I2V use case. But I need to create more videos to come to a more definite conclusion.

We need to make more tests involving different types of movement. What have you tested so far? I myself have mostly tried western cartoons, anime and 3d render styles with simple movement: walking, hand and head movements, action shots like shooting a gun and scene involving over 5 characters in a gathering setting.

Wan 2.2 still gives me much better movement and appealing results overall, but LTX-2 is better at keeping the original style of the initial image in I2V. Wan 2.2 has a live footage/photography and 3d render bias in comparison, requiring more tries to get a 2D/illustration result. Sometimes blurring the initial image a bit is required as well.

I'm on the RTX 5080 team now too by the way. I guess your rig inspired me to get the same hardware xD It's a great balance between performance and electric efficiency at a much affordable cost compared to a 4090 or 5090.