
Originally Posted by
Michael Withstand
Well it's not a crash but if somehow CO or ArmA 2 goes to desktop or seems to have frozen, you need to press Esc then press alt-Enter to minimize the game and alt-Enter back into full screen. That should solve the problem. There's no need to close the program at all.
It may help if you go to your document folder and change your ArmA 2 profile so that the refresh rate is set to match your monitor refresh rate. By default they are set to 75Hz.
Hope this helps someone