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Random microstuttering everywhere after mobo, gpu and ram…

Random microstuttering everywhere after mobo, gpu and ram upgrade

Hi everyone, I’m trying to troubleshoot a very annoying microstuttering issue that started after upgrading my motherboard.

My current setup:

CPU: AMD Ryzen 5 4500
Motherboard: ASUS ROG Strix B550-A Gaming
GPU: Intel Arc B580 12GB
RAM: 32GB DDR4 3200MHz CL16 (4x8GB Corsair Vengeance)
Storage: Samsung evo ssd
OS: Windows 11 (fresh clean installation)

The problem:

I get constant microstuttering everywhere, not only in games.

Examples:

Games have random small freezes/stutters.
In Cities: Skylines, the stutter often happens when I open a menu that I have never opened before. For example, opening the roads construction menu for the first time, or the power plants/electricity construction menu. After that, the same menu seems smoother.
During these stutters in Cities: Skylines, I can also hear a kind of buzzing/electrical noise coming from the monitor, almost like something is being loaded in the background (it feels similar to shader compilation, but I’m not sure).

Overwatch is also affected: I experience stuttering both during gameplay and even in the main menu, which feels very choppy and laggy.
More importantly, I can reproduce the issue directly on the desktop: dragging a window, especially moving it from one monitor to another, sometimes causes a small freeze or noticeable lag.

The whole system feels like it has random latency spikes.

Things I already tried:

Fresh Windows installation after changing the motherboard.
Installed GPU drivers.
Updated BIOS.
Tested GPU stability with benchmarks (no crashes).
Checked cables and GPU installation.
Enabled/disabled XMP/DOCP.
Currently running MemTest86 to check RAM stability.
My monitor setup:
Main monitor: 4K 60Hz
Secondary monitor: Samsung monitor

The stuttering seems more noticeable when interacting with windows across the two displays.

Could the Ryzen 5 4500 be causing a bottleneck with the Intel Arc B580 and creating these kinds of stutters, or should I be looking somewhere else?
Has anyone experienced similar microstuttering after switching to a B550 motherboard or with an Intel Arc GPU?

Any advice would be appreciated.
#hardware #technology
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