Sounds like the Python interpreter doesn't play nicely with multiple cores...not sure why that's Win10's fault.
I personally think Win10 is great. I loved 7 and was very worried about upgrading after the debacles of Vista and Win8. Win10 has its annoyances, but they are cosmetic for me - mostly just stuff like "where did Microsoft put the button to do X that used to be here and why did they have to move it?"
I do dislike the crap they've pulled with redesigning Office over the last year or two (since Office 2016). Seems like they're always moving stuff around or making you take 3-4 clicks to do something you used to be able to do in one click.