I have been trying to run guild wars 2 for more than a month now. acording to the arenanet specs I pass both minimum and recomended hardware. When I play however, I keep it on minimum settimgs and still get less than 20 FPS.
My rig is on my user page. Drivers have been updated and the game has been uninstalled and reinstalled.
If I were to guess, I'd say your cpu is a bottleneck. I have a 2600k with two 3gb gtx 580s in Sli and I was getting between 45 and 60 fps with everything maxed out at 1920x1200