My workplace has two Windows 10 machines, one in daily use, and the other is mostly idle. Both are extremely slow. The one in daily use takes at least 15 minutes to become usable after boot. The other is not much better. They are domain-controlled so not much we can do to improve. In contrast, we still have a 20+ years computer, which has an IDE hard drive, running Windows 2000 with MS Office to operate an instrument, and it is much more responsive.