Game freezes and cant Alt+Tab out

Just like the title. This can happen at any point of the game and I have to Ctrl+Alt+Del and then sign out. The process takes too long and by the time im in the game is already lost. This started happening every game and sometimes even after i reconnect. This used to also happen in pbe in the same patch, 9.20, but it would happen every 20 games or so. Any help would be appreciated!
Report as:
Offensive Spam Harassment Incorrect Board