Persistent Stuttering in Game

[Vrownie]

Hi all, 

one of my friend has had this persistent problem of intense stuttering in seemingly random moments when playing games. I am helping him post this information because he is not very good at English... 

 

Here is the specs of his computer: 

Motherboard: MSI MPG Z390 Gaming Pro (previously Z370)

CPU: i7 8700K

Memory: 16GB DDR4 3200MHz

SSD: HIKvision C2000Pro 512GB (Upgraded from SATA)

GPU: MSI GTX 1080 Ti (Previously 2080S, sold)

Display: BenQ Zowie XL

Sound: HD Audio

Ethernet: MSI I219-V

 

As you can see, he has swapped a significant portion of his hardware parts in order to solve the problem (he is a streamer). I have also recommended him with troubleshooting steps about temperature, internet connection, and (malicious) antivirus software. None of them has been effective... So here I am posting to you guys for help. Are there still any questionable components or this is most likely software? 

 

Thanks for the help! 

[Skiiwee29]

By recommending steps, are you saying that they are a non issue, or they dont know how to do it? My thoughts is temps based on the hardware involved. 

[rheyL]

is it running at stock speed? or overclocked? (proc/gpu)

also, about swapping the motherboard, fresh install of OS and drivers? or just a straight swap?