Guild Wars 2

Getting anything from 19 to 55 fps while normally playing. Basically unplayable when doing some big event like the first dragon or big WvW fights, fps drops to <10 there.
The inconsistency of the fps is the worst.
I will not continue playing until this is being fixed.

Here are my specs:

AMD Phenon II X4 955 @ 3.2 Ghz, not overclocked.
8 GB DDR3 RAM in dual channel mode
NVIDIA GeForce GTX 560ti
ASrock M3N78D Mainboard with nForce 720a chipset

Windows 7 64bit

Dxdiag attached.