Recently I was in Mooshu and a plethora of Sanoku Bandits were running up and down the road. My comp immediately bogged down to crawl speed where it took a couple minutes just to move a few steps.
So far this was the only instance of my comp slowing to ridiculous speeds (other are in areas like the Commons were there are numerous players congregating)
Is it really necessary to have the several enemies on a screen, compromising playability? I already have the settings as "poor" if you will to maximize playability.