How do I stop Windows UI from skipping/stuttering?

I have a Dell Inspiron 7706 2n1. It is running Windows 11, has Intel 1165G7 processor with integrated Iris Xe Graphics and the dedicated GPU is Nvidia GeForce MX350.
Shortly after I bought it in October, I noticed that Windows UI skips/stutters every 8 - 10 seconds. After many weeks of troubleshooting, I found out that the skips/stutters go away when I disable Nvidia drivers in Device manager. I have tried drivers from:

Nvidia https://www.nvidia.com.br/Download/driverResults.aspx/197461/en-us
And Windows update, but the skips/stutters still persist.
Recently, I discovered that the skips/stutters go away when I'm running the "Adjust image settings with preview' page in Nvidia control panel. So I run it at all times minimized. The render uses about 13% GPU utilization.

I have another observation: when the skip happens, a process I see in task manager called "System" has a high CPU usage for a split second that the skip/stutter occurs. it also briefly makes use of the dedicated GPU for that split second. This happens every 8-10 seconds. To investigate further, I right-click on "System" process and select "Go to details". On the details page, I right-click on "System" and select "Open file location". It brings me to this path "C:\Windows\System32\ntoskrnl.exe. The ntoskrnl.exe file description is NT Kernel & System. Do you make any sense of this observation?

Please how can I stop these skips/stutters?