Dropping 90% of frames for 1 second at random moments, even after a clean windows install

[KillingForMoney]

As the tittle suggest, I've been experiencing framedrop/freezing/lagspikes while playing games. I.E. CSGO, Rocketleague and even Windows in general. I got so annoyed with this that I reinstalled Windows, but with no prevail. Drives are up to date, BIOS, Windows, gpu. 

I have a 9700k on a Z370 Board from Asus, with a ROG RTX2080(16x lane) and couple of G.skill 8gig sticks in dc. 80+ gold 1000w psu from coolermaster. No overclock, didnt even have xmp on while checking if the bios was u.t.d. The boot drive is a m.2 970 evo with 60% space left running a legit copy of windows. Whole system has adequate cooling so no throtheling at max performance. I do also have couple ssd's and a hdd hooked up. LAN connection. 

 

Since this problem seems to be system wide, With all drives up to date on a fresh install of Windows, it has to be a hardware issue right? 

 

Eventviewer did show tons of errors on event id 476 before the reinstall of Windows. Havent had an error on the fresh one. 

[hardwin82]

can you run OCCT program, test LINPACK for 30 minutes please

check for max temps and any error messages

[KillingForMoney]

What linpack? Which is trustworthy?

NVM, just realized its a part of OCCT

[KillingForMoney]

1 hour linpack test with no errors, highest temp was 90* at cpu package

[KillingForMoney]

Any other test I should run?

[KillingForMoney]

I am going to run every test for 1 hour on OCCT, atm LINPACK and Memory had 0 errors. 

[KillingForMoney]

No errors but still occurring spikes. Runned every test. Did a monitoring test while gaming csgo, Nothing special happened in the graphs while a spike occurred. But one odd thing happened. Had one spike that was quite severe, like 5 seconds, and down to 1fps, and the odd thing while the spike was occuring was what came through my speakers which was morse code beeps.

[KillingForMoney]

SFC & DISM had no faults.

I tried playing csgo in winodwed mode to watch taskmanager while a spike was occuring, but there were no real spikes while in windowed mode. Tried in 720p, 1080p and 1440p. Had the most severe drop at 2k windowed, but i didnt dip below 200fps. 

As of writing there was a windows update and a graphics driver update. Windows update did nothing but the graphics driver did seem to solve it. I did do a clean install of the driver, so it might have been an old driver that was causing an issue.

 

Edit: The issue still persist, it did seem like the clean install of graphic driver did help for a short time, but the issue is still present.