After thorough testing of generation directly, I verified that it can handle tile sizes of 8. If this tile size is not met, animation does now work correctly because the images coming out of generation don't match the specified dimensions, making the prev_img wrong, which makes animation warping wrong.
Previous tile size of 64 was legacy, from notebook, and old auto1111 I believe. But, the pipeline can handle divisors of 8, verified. However, still not sure if the images produced are as good as when you use the 64 tile size, which is the size of the latent representation.
In any case, there was no limit on this before, and with these changes, it will assure that animation is always accurate. Suggest leaving slider at increments of 64. But, now if they select a dimension manually, it will be properly forced to tile size of 8, to ensure proper sizing through the engine.