I searched the forums and the FAQs and was unable to find anything about this :
''If you play the game and notice unplayably slow map scroll speeds and unit selection time, then please activate the "Video Acceleration" option from inside the Settings panel. That option will use a different method to handle graphics and should put your game performance back to regular levels. If you have never noticed any extreme game slowness, you can leave this option set to OFF''
I can't find this option anywhere... is this no longer available or is it to be implemented ?