Guild Wars 2

The GPU was badly fitted. My PC case had a weird bump, and the GPU could not slide in properly. Thanks for the help everyone!

My GPU-Z. Well, it reads x2, not x16 (under stress test). There is the problem. Motherboard supports x16 though, so I don’t really know how to fix it.

Hello!
My problem is the following: I had to replace my vga, and my new card does not perform better or at the same level as the old one. Performance dropped from around 30-50 FPS to 7-17 FPS. I tried different in-game settings (no difference between low-high), tried out many catalyst control center settings and drivers, but nothing changed. I even returned the card for an other one, suspecting a faulty vga. I have a pretty old system, but i managed to play with the game comfortably, now I can’t, and that makes me a sad panda.
Can anyone help?
My specs:
Phenom II x4 955 BE cpu
GA-78LMT-S2P motherboard
4GB DDR3 RAM
Asus Radeon r7 260x Directcu II OC 1gb
OS and game runs from a 60gb Kingston SSD