there is no system specs to have a hint of what might be the problem nothing just a video showing frame per second.
Not posting any info on what system you have and driver version will not bring us anywhere soon
PC Specs:
Cpu: AMD X6 1090t overclocked at 4Ghz
Motherboard: Asus Crosshair formula IV
Ram: 8GB of A-Data Gaming series V2
VGA: XFX radeon HD 5850
OS: Windows 7 Professional 64bit fresh install
Driver the latest rage fix drivers from AMD.