Absolutly Horrible Performance Issues

[Black Ops Guy]

Last November, I played the Demo for this game. The Game ran perfectly and I enjoyed it. So I added the game to my wishlist and bought it later on. When I finally got to playing this game today, the game ran horribly with the first level taking seven times as long to load as before and don't mean the loading screen, I mean the intro sequence at the beginning when the envirnment builds itself. When I was able to move my Frame-Rate dropped to what felt like 20 Frames per second and was near impossible to control my direction. I restarted the game and set the options to "Best Performance" and 1200X720 Resolution which didn't improve the situation much; the game was still unplayable.
Does anyone have any advice on how to solve these issues? (Besides buying a new PC)

[yusupov]

veryifying the integrity of the game cache? it doesnt sound like it should be happening, this is a high perf game & if hte demo ran fine on the same h/w the game will also.

what are your pc specs?

[Black Ops Guy]

Originally posted by yusupov:

veryifying the integrity of the game cache? it doesnt sound like it should be happening, this is a high perf game & if hte demo ran fine on the same h/w the game will also.

what are your pc specs?

When I attempt to Verify the Integrity of the Game Cache I get an Error that states that I need to close out of any Games or Tools before doing so.
My specs are:
Processer: Intel(R) Core(TM) i5-3330 CPU @ 3.00GHz 3.00GHz
Installed Memory(RAM): 8.00 GB (7.90 GB Usable)
System Type: 64-Bit Operating System, x64-based processor

[1337]

Also firewalls and Anti-Virus software can cause performance issues.