I really enjoy the game, but I tend to only play shorter games on medium sized maps or smaller. The reason is, I have a 4 year old PC (cutting edge at the time) and after about an hour of gameplay, things slow down to a crawl. Occasionally it gets so bad the game almost locks up (2 minutes to respond to ALT-F4), and once or twice I got a warning message about too much system memory in use. A reboot usually helps greatly.
So.... is there any one thing about the game (maybe in graphics settings) that is a real memory hog? Perhaps disabling some fancy schmancy graphics might lower the system resource requirements. Any advice is appreciated, thx!