Rig clipping through the floor when loading in

I’m trying to make a car hit a rig and the rig fly off (very simple stuff, I have that all worked out) but rarely, during playtesting, the rig just clips through the floor.
I’m guessing this is due to replication lag, where the rig gets loaded before the baseplate, but I’m not sure how to fix it.
I’ve tried to increase the humanoid’s hip height (saw in another post), but that made the flinging all weird.

I’m not much of an expert on replication, so some help would really be appreciated.

ok no one came to help me out on this, but im pretty sure its due to the rig being loaded in before the baseplate, and the physics simulating the rig falling through the floor