Random CPU Usage Spikes, and Massive FPS Drop in All Games

[Krubby Krab]

For about a month now I have been experiencing hug FPS drops in all games (from 60-250 all the way down to 10-30) and I think it could be the CPU I am sure of it. I have not OC'd my CPU and all methods I've seen so far have not worked for me. If there are any programs you need me to download in order for you to understand this problem further, just tell me which one to download. I don't know how to fix this and I hope it doesn't mean my CPU is dying or anything. If you can help that would be amazing I can't stand this problem anymore, Thanks

Methods I've Tried:
- Disk Defragment
- Dust off CPU cooler and switched the thermal paste
- Virus/Malware/Spyware removal
- Updated Drivers

Specs:
- Screen Resolution: 1920x1080
- GPU: MSI Radeon R9 270X Gaming 2GB
- CPU: AMD FX-8350 Black Edition GDDR5 @ 4.2GHZ
- PSU: Corsair CX600M
- 8GB (4GBx2) DDR3 Crucial Ballistix Sport RAM
- ASRock 970 Extreme3 R2.0

 

[Cycloid Torus]

Monitoring temps? voltages? I use HWInfo (http://www.hwinfo.com/).