Major loss of performance overnight

TheRealMason

Honorable
Jul 9, 2015
4
0
10,510
TL;DR~ I put my computer on sleep stayed round a friends for half a day, came back turned on my computer and there's a major loss of fps in all games e.g. from 40 fps in Dayz to 7, 220+ fps in CS:GO to 19, 80 fps in ARMA 3 to 20. There is also a very slight drop in performance when doing normal things for example youtube can be slow and jittery.

About 3 days ago i was playing Dayz and getting my normal 40 fps (in open fields of course), when my friend asks if i want to come over. I was like sure so i put my PC on sleep, thinking i would be back soon, and left to go his. I ended up staying the night, but i only left at 8pm. When i get back the next day at 1pm my computer was still on sleep. So i turned it on to get back to gaming and then my performance had had a massive drop overnight, there is a big drop in FPS in all my games, which is very painful. I have no clue what to do, my GPU drivers are up to date and all the other drivers are up to date from what I've checked, i reverted my windows 10 back to an earlier build as i thought it could be something to do with an update they did, i opened my case to make sure everything is plugged in properly, i checked my cpu for burn marks and such, everything looks fine. I really have no clue what to do, i don't have access to spare parts either to see if my components need replacing, any help i can get would be much appreciated thank you in advance.

Custom PC build:
Intel Core i5-4460 3.2GHz Quad-Core Processor
ASRock Z97 Anniversary ATX LGA1150 Motherboard
Kingston HyperX Fury Black 16GB (2 x 8GB) DDR3-1866 Memory
Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive
MSI GeForce GTX 970 4GB Twin Frozr V Video Card
Antec High Current Gamer 620W 80+ Bronze Certified Semi-Modular ATX Power Supply
Windows 10
 
How did you 'revert' Windows 10?

I would recommend you look at the update log, as there's probably been a GPU driver installed that is either incorrect or conflicting with one already installed. Depending how you reverted, you may not be able to see the update log now though.
 
There's an option under settings in windows 10 to restore to a previous build (windows 10 home button --> Settings--> Update and security--> Recovery), it said it could help if the current build is making your computer slow so i thought i would try it.