All of a sudden my PC has become slow?

Nik42_

Commendable
Jun 28, 2016
8
0
1,510
[Sorry if this is the wrong place to post it, didn't know where else though]

Hello, as you can see from the title my PC has become slow all of a sudden, going from 160 to 30-40fps on games such as CS:GO. This started to happen why i tried to stream CS:GO to twitch and my frames dropped from 160~ to 40 (because of the streaming), realised i couldn't stream so i stopped it but even after stopping, my fps hasn't gone back up. This was 2-3 days ago and since i have done a virus scan, uninstalled obs, defragged my hard drive and restarted my PC multiple times. These are my specs

CPU - Intel® Core™i7 Quad Core Processor i7-6700 (3.4GHz) 8MB Cache
Motherboard - ASUS® H110M-D D3: Micro-ATX, LG1151, USB 3.0, SATA 6GBs
RAM - 8GB Kingston DUAL-DDR3 1600MHz (1 x 8GB)
GPU - 2GB NVIDIA GEFORCE GTX 960 - DVI, HDMI, 3 x DP
Hard Drive - 2TB SATA-III 3.5" HDD, 6GB/s, 7200RPM, 64MB CACHE
Power Supply - CORSAIR 450W VS SERIES™ VS-450 POWER SUPPLY
OS - Windows 10

Any help would be highly appreciated!
 

Nik42_

Commendable
Jun 28, 2016
8
0
1,510

I've never opened the xbox app before now so i don't know if it automatically turns on but i've turned it off - no difference :c