should be the driver issue at 10.9.3 , not only Games, for some Pro App. too
http://9to5mac.com/2014/05/21/os-x-1...ical-pro-apps/
maybe roll back to 10.9.2 is good idea for now ..
http://9to5mac.com/2014/05/21/os-x-1...ical-pro-apps/
maybe roll back to 10.9.2 is good idea for now ..