The 60 fps worked really well in my testing, some of the pans were faster but still smooth. I didn't see much difference between 1080, 2.7k and 4k honestly, but once I saw evidence of shudder I stopped looking. I don't need it to be 100% perfect, but the 60 fps really seemed to be just about perfect and certainly WAY better than 30 fps. I never did 60fps since that turns off OA, but in these circumstances it doesn't matter for me.I am having limited success with using a faster frame rate. and panning slowly. It doesn't always work. The frame rate depends on the speed of your pan. I also take smaller yaws never using more than 25 percent of the spin at a slow yaw. 30fps. I would not use around filter as it slows shudder speed. Nothing is perfect and it seems to be an issue with all of the models. Shooting at 4k also seems to be smoother.