Dual Core Slowdown

[wild8900]

So after leaving Graal for a while I finally got bored enough to reinstall and play it a bit but when I got on Classic and a few other servers it was unplayably laggy. Not connection/ping lag but frame rate lag. I have 3 gigs of ram and a 2.6 Ghz dual core, Graal shouldn't lag AT ALL with these specs.
Weird right? Ive had this problem before matter of fact.

Solution? I opened task manager and set Graal's process affinity to only one CPU which fixed the lag problem.

Anyone else have the same problem?