Huge FPS drop in all games, I know it's a virus but I can't remove it. HELP

[GiuseppeFu]

Hi experts, I am in dire need of your help.

Up until a couple of weeks back, I was playing all my games fine, good solid FPS and everything. However, out of the blues, my fps in all games dropped like mad. I've tried everything.

My FPS in CS:GO is a 20-30 with no background applications on other than skype. It used to be a constant 100+. However, when I turn on Windows Defender and run a full scan and then play CS:GO, my FPS goes back up to 100+ when I play, although it fluctuates down to a lowest of 80.

I'm pretty sure it's a virus that's causing all this, but here's the thing. I can't seem to find it! Malwarebytes Anti-Malware Software, Windows Defender(Not exactly the best but it was worth a shot) can't find it. I don't know what else I can do.

I've cleared my %appdata% files, and defragged my HDD and SDD(which have 80% and 50% free space respectively).

My specs are as follows:
Processor: Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
RAM: 8GB
System type: Windows 8.1 64-bit Operating System, x64-based processor
Graphics Card: Nvidia GeForce GTX 765M 2GB

Please help me out, guys! Thanks in advance and have a good day ahead!

Edit 1: I am unable to system restore because for some reason, system restore was disabled. I don't know since when or how nor why, but yeah, it was disabled. So I have no point in the past to restore to.

 

[geofelt]

Use system restore(control panel/recovery) to reset your pc back to when all was well.

And... you do not want to defrag a ssd. You will lose longevity for no performance boost.

 

[GiuseppeFu]

Use system restore(control panel/recovery) to reset your pc back to when all was well.

And... you do not want to defrag a ssd. You will lose longevity for no performance boost.

Hi geofelt,

Thank you for your reply! Is there really no other way? E.g. a software / manual searching for the virus that's causing this problem?

Oh and about defragging a SSD, thanks for the tip, but why? I'm curious why defragging a SSD will make it lose its longevity.

 

[geofelt]

When you defrag, windows combines parts of a file that are in separate blocks into one.
That causes updates to the drive to erase the old and update the new.
A ssd has a limited number of updates for each block. You want to avoid using them up without reason.

The benefit of a defragged drive is faster access. On a hard drive, reading two adjacent blocks is much faster than on separated blocks. On a ssd, there is no penalty in performance reading, regardless of the physical location.

If you use system restore, your data files will not change. Only program updates will be backed out.
Viruses are sneaky. malware less so. A nasty virus will have disabled all means to detect or remove it. Hopefully, that is not your situation.

 

[Its_Byte_00]

defragging will actually slow down any sandforce 1-3+ and all trim enabled drives. in edition to that you generally will kill 1/5 of your SSD's Cells with 1 pass defrag, witch means your SSD space will go down, ie loss of usable storage space.