My sound quits after about 10-30 minutes after playing Far Cry 2 and CS:GO for 20-30 minutes. There are no symptoms of any kind before the sound stops working. It works just fine when I exit to windows and relaunch the games. In CS:GO changing the speaker configuration from headphones to 2 speakers or any other configuration fixes the problem, though it recurs anywhere from 10-30 minutes later. In Far Cry 2 which doesn't have any options beyond adjusting volume, I have to relaunch the game and all is well for 20-30 minutes. I'm running a fresh installation of Windows 7 and have tried different USB headsets (Logitech H 390 and Arctic P531) both of which give me the same issue. Can anyone please help me solve this issue?