[CLIENT] Unknown DX bug --> unable to connect

Played 1 game all in order. Second one a box popped up saying there was an "unknown" DX error, please make sure you have the right or up-to-date (forgot the exact wording) video drivers.

The drivers were up to date and certainly I did not install new ones one of a sudden. The game refused to connect, and I got a leavers remake.

A simple restart solved the problem.