Updating Quest 2 refresh rate causing physics stuttering

I've previously been having serious stuttering issues, both physics and others. In the end I implemented 2 awesome solutions.

Firstly I made sure my movement code was the first script run before anything else.

Secondly I reduced the amount of gameobjects in the scene. As my game was procedurally generated I had to write some code that merged nearby meshes with the same material and rebuilt with a single meshcollider - luckily I was using low-poly texture mapped colours so that included pretty much everything non-interactive in the scene 😄 I went from 100s of gameobjects in view to maybe 40.

Of course, the same could be achieved for most games by manually merging objects in the 3D package of your choice. The point being is that for for mobile devices like the quest, too many gameobjects creates a lot of overhead.

This "might" fix your problem since you're talking physics. Under Rigidbody on your GameObject that you can grab, set the Interpolate property to Interpolate. It might be set to None.

Try matching your "Fixed Timestep" for the Unity physics system to match your new framerate. For example, if your framerate is 72 make it 1/72 (.013888889). If you change it to 90 fps, change the fixed timestep to 1/90 (.01111111)