why is the performance so bad?

[Ten Letters]

i have a mid class pc but i cant play the game even on low details without vsync low shadows and just fxaa. what the hack!!!

[Ten Letters]

All updates are made.

PC:
Intel Core i5-3470 CPU @ 3.2GHz
8GB RAM
Windows 7-64bit
AMD Radeon R9 200 Series (GPU 4GB GDDR5)

[BrainPower]

I have the same problem. My GPU is AMD Redeon R7 m260. It seems that it can't run on AMD GPU.

[Ten Letters]

weird