CPU spikes to 100% when playing ANY game

DeRanger

Commendable
Aug 27, 2016
4
0
1,510
Specs:
i5 3470
GTX 750ti
8 gig DDR3 Ram

My CPU never used to do this and just started happening recently. The CPU usage will spike up to 100% when playing CS:GO and some other FPS games. When it does spike up to 100 the game will then flick to a black screen for 1-10 seconds max, I have tried some things to fix it (e.g.)
-Cleaned out the dust from the PC
-Closed every program/Processes that I am not using while playing games
-Mucked around with the Services
-Fresh Install of Windows 10
One thing that I haven't tried yet was replace the Thermal Paste which I don't think is causing the problem because my CPU temps hover around 30-50 Degrees.