i know this problem too ... i have it on both of my comuters here.
i dont know exact how this happens but normaly i can play without a freeze of the gamescreen.
if the game is started (window-mode , windowsize = desktopsize )
i look out not to touch the game window at any cost ... no minimizing or something.
if i change to another program i always use alt + tab ...
ok ... perhaps this will not help you ... but you know now others have the same problem form times to times .. you are not allone
[You must be logged in to view images. Log in or Register.]