game crashes randomly

Mine crashes similarly, theres no error or pop ups, it just soft crashes back to OS, weird is my video card 580 8g goes whisper quiet after sounding like a jet engine when it normally slowly winds down when I close the game. I've repaired the game, my settings are dumped to the lowest. The crashes started after the most recent update, no crashes before then. I don't seem to experience any crashes in the campaign mode. I'd reinstall the game but I've got 3mb download so I'm not rushing to do that.