physics vastly different between using vr and not using vr

making a multiplayer vr game here, and for testing purposes, i am able to play the game in a non-vr way, with the mouse and keyboard.

i've noticed though, that the physics engine behaves very differently depending on if i'm using vr or not. can anyone illuminate what might be happening here?

i have a ball launcher that applies a one-time force on a ball. the non-vr client sees the ball launch probably 2x or 3x as far as the vr client. aside from using/not using vr, the code is all...

physics vastly different between using vr and not using vr