Game crashes to desktop

Hi,

Over the last 3-4 days my game has been crashing to the desktop after one or two matches. It always happens when loading the next match / map. There is no error or message that appears, it just them game just exits.

The crash dump says: The thread tried to read from or write to a virtual address for which it does not have the appropriate access.

I have tried reinstalling GPU drivers and reinstalling the game and running the game as Administrator. I'm not sure what to try next.