Hi there. A few people have complained about having speed problems when running AoT. Like, having the lag symbol flashing there and not being able to move. Now, enabling vsync temperaraly fixes this but not for too long. This is most likely caused because you have a nice AMD processor. You can fix this by going here:
http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_871_13118,00.htmlYou'll probably want to install the "AMD Athlon™ 64 X2 Dual Core Processor Driver for Windows XP and Windows Server 2003 Version (exe) 1.2.2.2" one. You'll have to remove the driver before install though. It can be found on the Control Panel at Add and Remove programs. Install, restart, and game on! :D
Hope this helps!
-eternaldark