Random fps drop all of a sudden

[fayte251]

Hey i’ve been playing the game with about 21 hours under my belt with no problems. I just recently fired up my game and then my fps just takes a massive drop to about 15-30fps. Before i was playing with perfect fluidity no lag at all. My friend on his computer has played about 15 hours with no problem and at the same time as mine his is now doing the same thing taking the fps hit to around 15-30fps which at this point looks like a slideshow. We haven’t changed any settings or programs with our systems before the issue started

My system specs are as follows:
Windows 7 64 bit
8 gigs corsair dominator
Asrock extreme 6 mobo
2tb WD black RE4
Intel I5 3570k @ stock speeds
Radeon HD Asus 7970 @ 1050mhz

and my friend is running an Alienware mx14 r2
its specs are:
Windows 7 64 bit
8 gigs memory
Stock mobo
750gig 7200rpm drive
Intel I5 (mobile dual core)
nvidia geforce gt650m

Any input is greatly appreciated.