Multiple times today, playing online, I've had the game apparently lose the ability to accept input. Couldn't move, swap weapons or use skills. The other player could still move. and the game was otherwise "working", after a fashion.

The first time it happened, we just aborted. Later, we tried with the other player clearing the mission for me, but he started rubber banding too severely to be able to complete the level. 

We both had machines running with a decent high framerate. My ping to the server was typically 17-18ms.