Running like a sweetie now I have updated legacy drivers on my 10 year old x86 Inspiron 9300 (whopping 2gb RAM).
What I must stress though is that the 8.1 install was completely fresh and only about 3 weeks old with barely anything installed. I’m guessing how well it runs will depend on how much shite you’ve filled your computer with over the years. It definitely runs better than 8.1 though, it just feels faster and gets far less upset if you try to do more than one thing at a time.
When I come to do my desktop I will be obtaining my product key then doing a fresh install, it’s about time it got one anyway.