Problem: On some systems the game will run very slowly as soon as a few units show up on the screen, even though that system may exceed the recommended requirements.
Solution: This can by caused by ATI's Vsync feature. Disabling it should fix the slowdowns.
To disable this feature follow these steps:
- Right-click on an empty spot on your desktop, and select "properties" from the menu
- Select the "settings" tab
- Click on "advanced"
- Select the ATI 3D TAb
- Select "Use custom settings", then click on the "custom" button
- At the bottom of the window you will notice a slider labelled "Wait for Vertical Sync". Slide it all the way to the left until the setting reads "off".
- Click on "Ok"