I have a problem with ground plane.
I use ARCore 1.12.0 for stability of the ground plane.
I have about 40 objects with a collider and rigidbody.
Everything works well at the very beginning, but over time, tracking becomes worse and objects begin to tremble slightly.
After playing for 5-10 minutes (quite a lot of movement of the camera relative to the tracked place at this time), or turning on the game when the phone warmed up a bit, I have a performance loss.
Unity Profiler shows that problems in processing physics and post-rendering.
It seems to me that trembling causes invisible to the eye small and frequent collisions of rigidbodies which in turn causes
physics processing from the engine.
Tested on Samsung s8 / s9 and Google Pixel.
On the Samsung s8 and Google Pixel, trembling starts pretty quickly while the Samsung s9 performs much better.
Any suggestions or guesses?