[CRASH] Game Screen While in Play Keeps Closing into my Desktop

Recently after the patch update, the gameplay has been really buggy. Its no longer as smooth as it used to be. I have been playing several games since the patch and I have been constantly having the game screen close on me while in play. It is not a certain keyboard key that is doing this, its just the game screen minimizing on me. This is really troubling. The entire game does not crash, its just the game screen minimizing on me while in play. I have to select the game window to get back into the game. This can kill my character while in play. Please look into this with all the other recent glitches that are happening.