Question Pc stutters/freezes

[Alecc98]

Hey about a month ago i started noticing my pc freezing or stuttering seemingly randomly, however it does seem to occur more often when i'm streaming a game on discord. But it happens during normal gaming or when im just watching youtube videos aswell, where the video would freeze, then become desynced with the audio when it unfreezes.
Sometimes games will just stutter for 1 sec then its back to normal. Sometimes it freezes, then unfreezes if i click out of the game then back in. And sometimes the entire game freezes and i have to either close it and reopen it, or the game crashes with an error. (Usually something related to graphics card like "Your rendering device has been lost" or "unable to start up 3D acceleration")

If i am playing with an xbox controller the controller also disconnects during the freeze.

I have ran every stress test for every component that i could, no freezing, no stuttering, no errors or overheating.
CPU temp idle: 30c
CPU temp 100% load: 80c
GPU temp idle: 50c
GPU temp 100% load: 80c

They basically never reach these temperatures though during normal gaming.

BIOS is up to date, and i've tried both default settings and with xmp profile on. Also cleared CMOS.
I was on Windows 11 originally. Did a clean reinstall of it. Then did a clean reinstall to Windows 10, which im on now.
All drivers are up to date.
Everything is properly connected on the motherboard.
I've done normal stress tests with cinebench, memtest, furmark, and basically all tests with OCCT


I figured it is a hardware issue from what i have found out so far. But i'm at a loss at figuring out which part is failing, as all tests are running normally with no issues.
Any tips for what the problem might be. And also if it is a hardware issue, how can i find out what is faulty without having other components to switch to?

Specs:

ASUS ROG STRIX Z370-F Gaming
MSI GeForce RTX 2080 Duke OC
Intel Core i7-8086k
G.Skill Trident Z RGB 3200MHz 4x8GB
2x Samsung 970 EVO 1TB M.2 SSD
Corsair HX850i
NZXT Kraken X52 Cooler

 

[Darkbreeze]

How old is the HX850i?

Did all four of your DIMMs come in one kit, or are you running multiple kits even if they are the same part number?

Have you done any testing of the drives to ensure they are healthy AND have you checked to see that they are up to date on the firmware?

If it does this even when just watching video, I'd suggest to also completely pull the graphics card from the system, not just unplug things, take it OUT, and use the iGPU, then do a bunch of video watching to see if you can make it still do the same thing.

Honestly this really sounds like a PSU or graphics card issue, but you might also want to do a clean install of the Nvidia drivers after running the DDU in safe mode.