I've noticed the best place to test for wobble is the UFO catcher in Playroom VR. After moving my setup so i'm closer to 5' from the camera, I have much less wobble. However, sometimes when I sit back in my seat and move forward to inspect something, my view is also moving slightly to the left or right, as if I was strafing while moving forward. It's very noticeable in the UFO catcher and slightly disorienting. It seems recentering fixes it, but it will soon revert back to being wonky again.
The one thing I have not been able to fix is the OS jumping and skipping around. If I pan my head from left to right, the cinema screen while just sitting in the OS jumps and skips. A restart or power cycle fixes the problem but it returns quite quickly.