Question why does the CPU usage go up in windows 11 version 23H2?

Nov 10, 2025
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Hello,

I've been working with Windows 11 (version 23H2) for a few days now and I've noticed a strange behavior. When the system wakes up from sleep, the CPU usage in Task Manager for some processes (such as System and StartMenuExperienceHost) suddenly goes up and takes a few minutes to normalize.
My question is:
Is this a known issue in Windows 11 or is it related to the chipset drivers? Has anyone had a similar experience?
I didn't have anything like this on Windows 10 on this same laptop.