Some anon in one of the last threads mentioned FusionX being better for lightx2v than regular Wan. So I tried it.
It's around the same gen time for both. I did notice some improved physics/motion compared to normal WAN on some gens, but one of the LoRA's they baked into it tends to completely change faces. Why the hell they'd bake in a LoRA that does this is a mystery, because the model has some merits to it. But there it is.