I am currently running MS Windows 10 on the laptop from which I am typing this response. I do not go even one day, without complaining about the response. Also installed as part of the "package" was the new browser call the Edge. It is horrible and definitely something going on in the background. So I use the Chrome browser and Firefox. But since going to version 10, it really doesn't matter which browser I use, there is constant clocking now and there is no question that some programs are running in the background doing things as I try to use the internet. Probably data mining is going on. This was a problem in previous versions, but now it has become horrible, horrible is the only word for it.
For example, I am on this forum right now, and every few seconds things like "stop" or so much crap running in the background, everything just slows down - I am finding this on all sites, not just this forum, and yes I know this forum has a lot of ads and junk that is annoying that loads and I hate that, but this is much worse now and I think is independent of the ads and background stuff from "sponsors" of the forum.
I do not have any virus, I run Norten AV and Norten Internet Security and run regular scans and updates daily, it is not a virus.
I can say, Windows 10 response is annoying if that is the word for it.
I have multiple computers, and I have an Apple as well but that one I currently have shutdown (I gave it to my daughter as a gift, but now it is outdated), the deal is I really don't like the Apple desktop, I started off in the Unix world inclusive of Linux/Unixware/BSD/System V etc and several versions of Linux including the very early ones such as Slackware and the first DOS based loader LINLOAD that lauches Linux, I have Red Hat, I have servers as well (ProLiant) with Windows 2008 in my home, I run VMware ESX (which is actually a proprietary version of a Linux based system that runs on top of Windows) and VMware Desktop, I have run the various version of Apple OS, on and on, and I have never seen such poor response as on Windows 10, there is definite snooping or data mining going on. In fact, it just "stopped/clocked" for a 2 seconds just now as I try to type.
So that is why probably 90% of the time I use my Smartphone when reading or responding to the RF forums, the response is much better than this Laptop (an HP). I suppose I could use the Windows 8.1 desktop in another room but I am lazy and am watching cable right now on the boob tube so the laptop is convenient to have while watching TV in the living room.
To tell the truth, UNIX/LINUX cadre has been, is, and probably will be into the future, the best OS to use, better than Apple.