Moving from XP to Windows 7 actually sped up a single core 32bit PC I have at home, but then the Win 10 installer filled up the hard drive, and consumed 50% CPU for months before I finally found a nice utility to completely remote it, and keep it gone. It was infuriating!!
Funny how its installer seem to not even do a basic check of disk space and computer capabilities before start to download loads of data If let's say, the installer takes 10GB it shouldn't start downloading anything unless there's at least 20GB
This is when I discover the machine that I purchased only about 2 years ago now was actually 32-bit. Didn't even know they were still making them at that time.
IIRC it bailed out in the first phase before downloading everything, but, still, couldn't the little popup check something as basic as bittedness?
Also IIRC it didn't stop bothering us until I went and did some registry hack or something to make it shut up, as it was just taunting us at that point. But I'm less confident about this aspect of my memory.