The article is worth a read but to save you a click if you don't want to: Windows 11 is the worst in all metrics. Includes startup time, RAM usage, and speed of using apps (Paint, web browser)
This is a pattern that keeps repeating: Windows 11 was last in the battery test, took longer to render a video project in OpenShot, took its sweet time opening the File Explorer window, and opening built-in applications like MS Paint left enough time to fetch a fresh cup of coffee. Not to mention Windows 11 taking the longest to open websites and scoring worst of all in single-threaded CPU-Z.
