Once again we've had this problem since upgrading to A7 and it occurs in A7.07 and A7.10.1.
We have a level with 2 large terrains and 6 large geometry complexes. We drive a physics car, (modified buggy and code from car demo), around these levels. The large geometry sections are made up entirely of large map entities.
Sometimes when driving through the geometry sections, in certain locations, the Car self destructs, ie. the wheels get attached on opposite sides away from the vehicle slightly, and you can't move. If you wait long enough the car will snap back into shape and you can drive off again?

It is always in the same places when it occurs, and you can be going very slowly when it occurs. It's nothing to do with a high speed crash or anything. It's like there is a "black hole" in the level?

Jethro.