Im not even sure what is happening here but I'm just trying to make objects fall normally onto the floor - they need gravity/be able to be pushed around, but just fall onto a static floor object.
I have a cube and my floor mesh. Floor mesh has this:
Cube has this:
Initially I'll have my cube just positioned right over the floor. Then I press play and pause, within one second it's 100 m away, spinning/falling. What could be happening here?