USB Devices Lagging/Stuttering/Hitching Randomly

[pablo67340]

Hey guys, for quite a long time, I've been having issues with my PC stuttering. At first I thought it was my mouse lagging, so I replaced my mouse and no luck. Then I assumed it was my entire computer lagging because in games, while looking around, sometimes it would stutter. However, I found this not to be true because if I watch videos, or something consistently moving, the video itself doesn't stutter, just my input does. Then today, It was happening after a few weeks of my PC being fine, I pulled up a YouTube video, sure enough the video didn't stutter once, just my input does. I managed to capture it on

 

Video: Stuttering Video

 

- Specs: 

Motherboard: MSI MPG Z490 Gaming Carbon Wifi

Processor: Intel I7-11700K

Ram: 4x8GB HyperX Fury @3000Mhz DDR4

GPU: Gigabyte 3080 Vision OC

SSD: Samsung 980 Pro 1TB NVME PCIE 4.0 (OS), Samsung 860 Evo 1TB (Passive Storage only), Seagate Barracuda 4TB (Passive Storage Only)

Cooling: Custom Looped. GPU never runs above 68C while gaming under heavy loads, usually runs at 28C while working/doing anything else (See picture of build below)

PSU: EVGA 1000G2

Sound Card: Asus Xonar DGX

Capture Card: Elgato HD60 Pro

 

In order to try to solve this issue, I've replaced a ton of things. I replaced my PSU (was EVGA 750G), I replaced my processor (was I7-10700k), I replaced my SSD (Was just using the 860 Evo which is now just a passive storage drive, no longer running OS), I replaced my mouse, and after all that, no luck.

 

I am starting to believe this could possibly be caused by my motherboard? The stuttering happens randomly, under light load, and heavy. When the stuttering happens, my wireless headphones start to get static, and start disconnecting on and off, while my mouse and other input devices also lag. 

 

Fresh Windows Install, Latest drivers from manufacture websites. The only idea I have in mind now, is my motherboard. When the stuttering is happening, checking HWMonitor yields no irregular results either. 

 

If any of you fellas have any idea as to how to possibly fix this, or if I should just proceed with replacing my motherboard, let me know. Thanks

 

Picture of setup attached below:
 

[Bombastinator]

Seeing “sound card”and “capture card” so there’s 3 cards. Might one of them possibly impinge on the airflow of the other?  The reason I ask is there was a video posted by someone I watched earlier where there was a wifi card impinging only a tiny bit on video card air and moving it was enough to remove the stutter. Just a thought.  Might not apply. 

[pablo67340]

3 hours ago, Bombastinator said:

Seeing “sound card”and “capture card” so there’s 3 cards. Might one of them possibly impinge on the airflow of the other?  The reason I ask is there was a video posted by someone I watched earlier where there was a wifi card impinging only a tiny bit on video card air and moving it was enough to remove the stutter. Just a thought.  Might not apply. 

My video card does not have fans anymore as it's now liquid cooled, but I could try taking out my sound card and capture card to see if anything changes. So you personally don't believe it could be the mobo?