One WMI failure loop explained hours of random high usage.
Some default Windows tools aren't as good as they can be, and there are several alternatives you could choose from to boost your productivity and performance. Still, there are a few first-party apps ...
To improve performance on Windows 11, you can safely end processes like unused apps, bloatware (e.g., Copilot, Phone Link), high-resource processes, and peripheral-related programs via Task Manager.