This has been a problem I have been experiencing as of today. I will log in and have no issues of lag but after about 15-20 min of being logged into the game my screen will go black. Sometimes the game will just completely close. I am running windows 7 via parallels. Haven't had a problem with it until now. I tried flushing my dng and restarting my computer. I am currently not running any type of anti virus software. Thanks for your time
