It is certainly perceptibly slow. Carried out a test on my 12 year old PC running Win-10 vs a new HP Win11 laptop of my friend which he bought in a hurry before price increases. Opened a directory of several thousand files with nested folders - much slower at navigation. Much slower at opening right-click menus. Much slower at pretty much everything.

M$ has now introduced web-latency into the desktop along with their adoption of web-tech into the OS. You gotta get used to staring at that spinning blue circle, counting the many precious moments of your life draining away.

> As opposed to something else, like a new shell extension or a new filesystem filter driver on Windows 11?

Ultimately, what difference does it make? The file explorer in Windows 10 is much faster than the one in Windows 11, and it's very noticeable. Turn on the old context menus, and try right clicking a file. Instant in Windows 10, visible delay in Windows 11.

Its not faster bereft of context, its just bloated. If you have enough resource to throw at it, its roughly the same. Theres some specific things that can themselves be slower, the Windows 11 Start Menu has had a lot of words written about its new implementation.

I measured once. It uses about 50% more resources and offers less feautures (or at least hides existing feautures). You may not have noticed if you had resources to spare.

It does offer some new features for businesses. Nothing useful for the consumer, and nothing to justify the massive performance loss