FPS drops on a high-end PC

Cetoke

Reputable
Jul 3, 2014
2
0
4,510
My rig is:
MSI GTX780 TwinFrozr4
AMD FX-8350 @4.0Ghz
8GB of G.Skill Ripjaw's
Corsair RM850
ASRock 970 Extreme4

I get FPS drops to around 30fps (for 5-10 secs) from over 100 fps in almost every game I've tried, I have no clue what's causing this, my PC is not even near to overheating, could this all be caused by my shitty router? (cisco epc3825) I just recently upgraded my PSU from 550W to this 850W to see if it was because my components didn't get enough power, but the problem didn't disappear.I'm getting really fustrated.
I'm running the latest driver updates for my GTX780, with some of the games from a Samsung SSD and some of them from a WD Caviar Blue 1TB HDD.

What the hell should I do? I feel like I wasted over a grand.