Question Jitter on ARMeshManager generated meshes

Hi, I'm using ARFoundation 4.2.1 and Unity 2021.2.7f1 on iOS/ARKit with the ARMeshManager component. It's generating meshes with a MeshCollider on it so I can get objects to bounce and land on the surfaces. This works for the most part but any object that comes to rest starts to jitter and move on the surface. I assume this is due to the meshes constantly being updated? Or are there some Physics settings I can change? Or do we just disable the ARMeshManager after a certain time frame or surface is found. Scoured the internet and can't find any guidance here. Any suggestions? Thanks in advance!