I also don't see smooth movement without extraordinary effort and simple objects, and it seems I'm just increasing the framerate. Although funnily I can imagine

I also don't see smooth movement without extraordinary effort and simple objects, and it seems I'm just increasing the framerate. Although funnily I can imagine body and hand movements (which are smooth) in detail, and I don't feel the framerate limitation at all; I can get a 'intuitive feeling' for each kind of movement that way. So it seems like my kinetic-proprioception has a lot more temporal capability. In terms of 3D imagery, I can visualized complex 3D objects and rotate them around, or navigate 3D cave spaces. But it requires significant focus, and the "framerate" is very low, like warping you mentioned. And for years I've spent time before sleeping visualizing things (often in 3D), so I think it's something I developed too (it's fun and I knew it was going to be useful -- when solving problems I very often resort to visualizations).