Extreme Lag With Low Settings

[ABasicPotato]

So I've recently reinstalled a new graphics card and all of my set up into a new case. Everything was running smoothly until recently where I now receive 40-120fps in csgo and 20fps in Dead By Daylight, at the lowest settings. Even if I get decent frames it is still choppy. Also, after a lag spike in csgo sometimes the monitor will not recognize the DVI cable and will say signal not found. I remember a similar problem with my brother's setup where I changed something in the bios and it solved the issue. However, this was a while ago and I can't remember what I changed exactly. To attempt to solve the issue I reinstalled Windows, CSGO, and my drivers but none of this solved my problem. None of my parts are overclocked.
These are my specs:
GTX 980ti Hybrid
i7 4790k
2x8GB DDR3 Corsair Vengeance Pro
Asus Hero VII

 

[I3lue1]

Why do you play on low settings?

It sounds like a power management issue. Your system/ BIOS is in some sort of power-saving mode and that throttles back or even downright shuts down the video card. Try disabling all power-saving options in Windows and check in BIOS about doing the same.

 

[ABasicPotato]

Why do you play on low settings?

It sounds like a power management issue. Your system/ BIOS is in some sort of power-saving mode and that throttles back or even downright shuts down the video card. Try disabling all power-saving options in Windows and check in BIOS about doing the same.

I made sure all my windows power management settings were set to performance instead of power saving. I also looked through my BIOS for any type of power management settings and found nothing. Also, I had my settings set to low to see if that would even slightly increase my fps.

 

[I3lue1]

Ok; so how did it go?

Also, did you do any temp tests and benchmarks? Did you check to see if anything is working @ 100% while you're gaming (CPU, GPU, RAM, etc)? Did you connect everything correctly and did you plug in your card in the same PCI-E slot?

 

[ABasicPotato]

Ok; so how did it go?

Also, did you do any temp tests and benchmarks? Did you check to see if anything is working @ 100% while you're gaming (CPU, GPU, RAM, etc)? Did you connect everything correctly and did you plug in your card in the same PCI-E slot?

Changing the power saving didn't help. I've never done any temp tests or benchmarks. I connected everything correctly and also everything runs under about 60% accept my cpu which shoots up to 65% to 90%.

 

[I3lue1]

Do you get the lag spike when your CPU is around 90%? If so, can you do some temp tests for it?

One more thing: when you have a lag spike, keep a task manager window open and see what's using up the CPU. Also check the performance tab when you have a lag spike. Just last week there was this guy that had a very similar issue and it turned out that his motherboard was underclocking his CPU to 700 MHz because of some BIOS mishap.