Guild Wars 2

Hello fellow guild wars 2’ers, i got a problem with my framerate. It is 20 outside and 9 fps in the big city of the scarr. I got everything on low and everything disabled that improves the graphic. But my pc should perform much better? I bought him 2 months ago and its a custom pc for gaming. Drivers are up to date. this is my diag:

Display Devices
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Card name: AMD Radeon HD 6800 Series
Manufacturer: Advanced Micro Devices, Inc.
Chip type: AMD Radeon Graphics Processor (0×6739)
DAC type: Internal DAC
Device Key: Enum\PCI\VEN_1002&DEV_6739&SUBSYS_E174174B&REV_00
Display Memory: 2804 MB
Dedicated Memory: 1012 MB
Shared Memory: 1791 MB
Current Mode: 1920 × 1080 (32 bit) (60Hz)
Monitor Name: BenQ V2220 (Analog)
Monitor Model: BenQ V2220
Drive: C:
Free Space: 14.9 GB
Total Space: 109.9 GB
File System: NTFS
Model: WDC WD1002FAEX-00Y9A0 ATA Device

My proccesor:

AMD Phenom II X4 955 Average CPU Mark
Description: Socket: AM3, Clockspeed: 3.2 GHz, No of Cores: 4, Max TDP: 125 W
Other names: AMD Phenom™ II X4 955 Processor
CPU Launched: Q1 2009
CPUmark/$Price: 27.01 Overall Rank: 276