Windows 10: Gaming Laptop having sudden FPS/Bandwidth issues after Windows 11 23H2

Hi. I have owned an HP Pavilion gaming laptop since 2020. and for all of its lifetime up until late October the laptop has run most games which I play completely fine, clocking over 130 FPS in games like Valorant, CS:GO, and Grand Theft Auto 5 running at high-ultra settings. and about 80-90 FPS in AAA titles like Forza Horizon 5 running at High settings. After I had updated to the Windows 23H2 update. I have been noticing sudden stutters and drastic FPS drops in the above-mentioned games. after going through a similar thread where the solution seemed to revolve around thermal throttling. i fin

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Sudden FPS drop/Stutter

Since 2 days ago, I just turned on my Computer, and it starting having issues while I was playing Witcher 3 (starts with decent fpsm and then very low fps, dropping to 35, then 20, and stopping at 12 or so, in a matter of seconds, in a matter of 1min of starting the game), also stuttering without any high demanding programs, randomly. I was playing at 45-60 fps, without any stutters or sudden fps drop. Have tried other games the issue persists. Even setup everything to low settings.
I have ran several tests with several tools, all seems normal, no sudden memory spikes, or temperature raising out of the ordinary, nothing that would indicate such an fps drop or stuttering.

MSI Afterburner

I also did the reset option on Windows10, completly cleaned out all my personal info from the windows partition.
So at this point, I am not sure if it is a software issue or a hardware issue.
Any suggestions are greatly appreciated.

Edit: I kept doing some tests to find out the issue. And this happened before and I was able to replicate it. Same thing happened as before, till I set it up to fullscreen, Alt+Tab from the game and then back to the game, FPS went up to 50 again, stable and good, dropped after a couple of seconds. After a bit it went to 2-5 fps, and I had to shutdown the game, because even the sound was getting messed up.

MSI Afterburner 2

In this image those ups and downs in the GPU usage are when the fps dropped really hard and the sound got messed up.

 

Windows 10 will have a 23H2 release like Windows 11 23H2 ...?

So, with Windows 11 23H2 in Fall 2023, will not be Windows 10 23H2, but instead something like Windows 10 22H2v3, that’s correct?

 

Permanent FPS drop in all games.

Hi,

Outdated drivers, CPU-intensive processes running in the background, virus and malware infection, and CPU throttling are reasons for a sudden FPS drop when playing games.

For us to properly isolate the issue and provide a suitable resolution, we would like to know the following:

• When was the last time you have installed the latest drivers on your computer as well as the latest game updates?
• Have you checked the CPU temperature while playing games?
• When was the last time you have cleaned your laptop?
• When was the last time you run a full scan on your laptop to check for virus and malware?

Looking forward to your response.