Platforms have jitter

[nomnomab]

Hello! I started playing around with the project to see how things works, and I noticed that the provided scenes have jittery platforms when the controller is on them.

Unity_DHzcvpuKwf.mp4

In your twitter video they seemed smooth, so I am unsure of what the issue would be here! I also noticed that it seems to get less jittery the higher the frame rate goes, but even then it still gets some hitches.

[nomnomab]

After tinkering with it, it seems to only be smooth with the Update mode on the PhysicsManager. Although, even with that I notice it jittering in that case, more so on a fresh project (checked also on 6.3.14f1) with the same set-up, which is definitely strange.