The only reason I'm on 10 with my main pc is because the 7th gen intel in there isn't compatible with win11. I have another pc that is 7th gen, which I put windows 11 on and there is just something weird about it. When I do anything on that machine it doesn't do it immediately, it sits for a few seconds before actions are done. Really aggravating. Clicking on a program on the taskbar takes a few seconds before it opens. File explorer, firefox browser, settings pane, ... Once programs are running it's fine to use said programs, but I wonder what they did to make it feel this way.
I have Linux on both machines as primary OS and they are super snappy, it's not the hardware.
I had Windows 10 on an older (but not ancient) machine and it was literally unusable. 10-15 minute boot time and another 5 or so just to get a browser to open. The misery didn't end once things were open; everything was still slower than when I had windows 7 on what would now be considered a truly ancient machine. I put Linux on it and experienced a roughly 5x speedup.