I don't get a lot of lag but my cpu evidently can not handle the seiges at all. I have tweaked the setting as much as I can and if there are more than 50-100 people in the area I pretty much get 1-2 FPS.

I am not sure when I will be back in but I know that I will not be able to upgrade my computer anytime soon. Tasorin helped me with my settings etc and we basically decided my Processor is not very good and my video card could be better for this game.