Question Microstuttering in whole PC ?

[Olot17800]

https://drive.google.com/file/d/1fBC6-C63aggfFAl2ApLVM3yrXXZ-fe2U/view?usp=sharing

it started to happen since some time and i can't remember changing something in pc..
tried reinstalling windows,chipset drivers..used ddu in safe mode and reinstalled latest version of gpu drivers.
bought new dp cable just in case.reseated gpu..
i can play games on 60fps with no problem and i don't have frame drops but it just stutters when i move camera in game or watch video..basically everything that moves on the screen..
hardware info down below.
https://drive.google.com/file/d/1oAfFW-aqrFHFkGPJod6mHPHSrn6_PuwA/view?usp=sharing
psu monitor mobo
any help would be appreciated..thank you.

 

[Aeacus]

tried reinstalling windows,chipset drivers..used ddu in safe mode and reinstalled latest version of gpu drivers.
bought new dp cable just in case.reseated gpu..

With all that testing, it slims down what could be the issue. One remaining would be MoBo.

mobo
any help would be appreciated..thank you.

Could be due to the low VRM phases amount your MoBo has. It only has mere 4 main VRM phases. And having too few VRM phases, can lead to stutters in game.

Here's good Q&A about VRM: https://www.lenovo.com/us/en/glossary/vrm/

VRM can significantly influence graphics performance, particularly in high demand computing scenarios. Good VRM ensures your graphics card receives a stable and adequate power supply, which is crucial for maintaining frame rates and avoiding stuttering or crashing during graphics-intensive tasks.

There is no way to "upgrade" VRM. Only option is buying new MoBo with more VRM phases.

For example, my Z170A Gaming M5 MoBo (from 2016) which has i5-6600K CPU on it, has 12 VRM phases. System has been stable for the past 9 years now (no stutters or anything). Currently, i'm in the market of upgrading my old system and current plan is to go with R7 9800X3D CPU, which i'll be pairing with MoBo that has 20 VRM phases.

 

[Olot17800]

and low vrm also affects for doing simple task like watching video? it stutters everywhere.even on webpage scrolling.

 

[Aeacus]

and low vrm also affects for doing simple task like watching video?

It could, yes.

Since when you've exhausted the obvious suspects (software, GPU, monitor, display cable), then what remains, would be VRM phases.
Either that, or ghost in the machine (aka unexplained phenomena).

VRM is crucial because it stabilizes voltage fluctuations, ensuring that your computer's components get a consistent power supply. Stable voltage is essential for maintaining performance, especially during heavy tasks like gaming or video editing. Reliable VRM can extend the life of your hardware and improve functionality.

The MoBo you have, despite being Z390 chipset, is actually the low end of all Z390 chipsets out there. Also, it is one of the cheapest Z390 chipset MoBos you could buy. And with cheap price - it doesn't have much quality components on it. Lack of VRM phases would be one apparent feature of cheap MoBo. (You could actually see it from VRM heatsinks, which are small/thin.) Another would be overall lack of aesthetics.

 

[geofelt]

Sounds like thermal throttling to me.
What is your case and fan arrangement?
What is your cpu cooler?
What is the make/model of your psu? How old?

I doubt that weak VRM is an issue.

And... userbenchmark is considered by many as junk science.

 

[Aeacus]

And... userbenchmark is considered by many as junk science.

While overall true, it does have it's merits.

Namely;

https://drive.google.com/file/d/1oAfFW-aqrFHFkGPJod6mHPHSrn6_PuwA/view?usp=sharing

From the Userbenchmark run, your RAM operates at 2133 MT/s while it is rated at 3000 MT/s. So, did you enable XMP from BIOS? If not, try enabling 3000 MT/s XMP from BIOS and look if stutters go away.

Also, cross-validate RAM holding it's frequency with HWinfo64,
link: https://www.hwinfo.com/download/

Summary mode shows RAM speed and timings once OS is loaded.
If your RAM is still stuck at 2133, despite you enabling 3000 from BIOS, there could be 3rd party program that overrides BIOS changes.

 

[Olot17800]

Sounds like thermal throttling to me.
What is your case and fan arrangement?
What is your cpu cooler?
What is the make/model of your psu? How old?

I doubt that weak VRM is an issue.

And... userbenchmark is considered by many as junk science.

its not..3 front intake..2 top with aio pump..1 back exhaust..cpu temp doesnt go above 70 in games and idle is 30..psu info is in first post..not even few months old because i bought new modular..gonna change mobo to old one i had and test..its asus rog hero x..probably better than this junk..i dont believe in userbenchmark much too..thats why im here to some human with brain..thanks..i will update

 

[Olot17800]

While overall true, it does have it's merits.

Namely;

From the Userbenchmark run, your RAM operates at 2133 MT/s while it is rated at 3000 MT/s. So, did you enable XMP from BIOS? If not, try enabling 3000 MT/s XMP from BIOS and look if stutters go away.

Also, cross-validate RAM holding it's frequency with HWinfo64,
link: https://www.hwinfo.com/download/

Summary mode shows RAM speed and timings once OS is loaded.
If your RAM is still stuck at 2133, despite you enabling 3000 from BIOS, there could be 3rd party program that overrides BIOS changes.

https://drive.google.com/file/d/1zdwQGQFRMFc0lKKv4gP6ljNMt7sGjdds/view?usp=sharing
yes it was just for test without xmp..

 

[Aeacus]

gonna change mobo to old one i had and test..its asus rog hero x..probably better than this junk..

Z370 ROG Maximus X Hero also has 4 main phase VRM, just like your current MoBo.

Here's in-depth explanation of the Z390 ROG Maximus XI Hero VRM phases, which does have 4 main phase VRM as well;

View: https://www.youtube.com/watch?v=bLO-vYjJN-I


That video is very technical but it nicely tears down and explains how VRMs work. And also why the 4 phase VRM is such a bad option, compared to 8 phase VRM (starting form 14:10).

Also found a discussion on Asus forums where folks were discussing the poor VRMs Asus 300-series MoBos have,
link: https://rog-forum.asus.com/t5/z370-z390/vrm-explained-on-asus-maximus-xi-hero/td-p/761569

So, for MoBo replacement, you may need to look towards Gigabyte or MSI, who's MoBos actually have 8 phase VRM.

 

[Olot17800]

Z370 ROG Maximus X Hero also has 4 main phase VRM, just like your current MoBo.

Here's in-depth explanation of the Z390 ROG Maximus XI Hero VRM phases, which does have 4 main phase VRM as well;

View: https://www.youtube.com/watch?v=bLO-vYjJN-I


That video is very technical but it nicely tears down and explains how VRMs work. And also why the 4 phase VRM is such a bad option, compared to 8 phase VRM (starting form 14:10).

Also found a discussion on Asus forums where folks were discussing the poor VRMs Asus 300-series MoBos have,
link: https://rog-forum.asus.com/t5/z370-z390/vrm-explained-on-asus-maximus-xi-hero/td-p/761569

So, for MoBo replacement, you may need to look towards Gigabyte or MSI, who's MoBos actually have 8 phase VRM.

but if it was vrm it should happen all the time..before it was fine..so it can start to happen after years?

 

[Aeacus]

but if it was vrm it should happen all the time..before it was fine..so it can start to happen after years?

Capacitors on MoBo age (all components actually age in time), and with this, performance is also reduced.

To find the culprit of the issue, trial-and-error method works when you replace components.

Software wise, you've essentially done everything. Clean OS install fixes those issues.

You bought new DP cable. This rules out display cable.
While your reseated GPU, if possible, try with 2nd, known to work GPU. To rule out GPU issue.
Same with actually everything else: CPU, MoBo and RAM too.

For RAM, you can test if your RAM is error free or not.
Download and run memtest86,
link: https://www.memtest86.com/

Guide to install and use it: https://www.memtest86.com/tech_creating-window.html

1 full pass (all 15 tests) is bare minimum. 2 full passes are better while 4 full passes is considered acceptable.

Since it takes a while, best to let it run overnight.
1x 8GB ~1h per 1 full pass. ~4h for 4 full passes.
2x 8GB ~2.5h per 1 full pass. ~10h for 4 full passes.
2x 16GB ~5h per 1 full pass. ~20h for 4 full passes.

If there are no errors - RAM is sound.


You said you have 2nd MoBo at hand. Testing with it would show if things improve. Albeit, 2nd MoBo also has mere 4 VRM phases only.

It is difficult to tell what exactly causes the stutters in the PC, since PC is made up of several different components and those components individually have different degree of build quality as well.