I’ve played gw2 with my computer since the first beta and never had a problem. Since last month I can’t play gw2 anymore. Some day I can with 60fps on medium-low but some other days I get 6~7 fps and the game is unplayable. Now It’s almost a week this happens. Tried to restart the game, the computer, tried to repair but still when I select the character everything is laggy even my computer. Also checked my temperatures (everything around 50°) and cpu usage (under 30%).
My specs:
Intel i7 – 930 3.20Ghz
12GB Ram
ATI 7850
Windows 7
It’s frustrating because some day I can play smooth and some other I cant at all and this only happens when I play GW2. Any advice on what to do? I’d like to solve this problem before the HoT release 
Computer performance
I have a feeling it has something to do with your graphics card drivers.
Do you know whether your GPU is overheating? What is the GPU usage like?
Have you checked your RAM & HDD for errors?
You should not be getting 6-7 FPS unless it is a big map blob or a major zerg in WvW.
Desolation (EU) → Yak’s Bend (US)
In your backline: Elementalist+Mesmer+Necromancer
In your backline: Elementalist+Mesmer+Necromancer