Anybody any idea why my game runs so slow? The sreen scrolls jerkily, build windows open slowly, every so often the game just stops, sometimes for as long as a minute. I thought at first it was lack of memory so I shelled out £40 and doubled my RAM up to 4gb but it's made no difference. It was almost tolerable when I played the campaign but now I've moved onto Chronicles of Tandria it's become very problematic. I'm running Windows XP Pro.