Hi, @TooFine.
Usually stuttering is a consequences of a CPU usage of 100% or GPU usage 100% on overloaded RAM.
By the way, to understand which cause this, you can open the task manager to see if there is some software who overload your CPU, the image below show you that I mean (the text is in Italian, but because I from Italy).
With this tool you can understand what overload your CPU.
But if you do not notice anything strange, the issue can be caused by a Software which cause a bug, or a driver so check if your system and windows is updated.
Talking about software, one of friend of mine experienced the same issue with an Intel I9, and the overloading is caused by the MSI dragon Center and their utility installed like also the RGB things and RBG SDK.
So, to avoid that some times utility cause issue uninstall every utility supplied by motherboard produce, and just install only the drivers, to avoid incompatibility or bugs.
Out there some people experience something like a Hughe drop of FPS because the ASUS Armoury crate cause a bug etc.
Let me know,
Kind regards
Farcuen