Win 10 kept bugging me to update so I clicked through it and scheduled it to do so a few days later, but after my last click, when I thought it was uploading files, it went through the whole update, I didn't want that NOW!!!
First issue was error 43 graphics card, win 10 didst like it, installed the drivers that came with my card, and all was as it should be. HOWEVER, put comp in sleep mode, wake it up today and graphics card dejaview, had to reinstall the drivers again!!
Hope this is not a habit!!! Later when I have time I will work though the Win 10 key find, make a media disk and do the clean install.
As for performance, I see no difference from WIn 7 , but then my comp is a 2013 build still fairly fast, so the whole update process was like 20 mins top. Other than the panels when you click the window button I don't see too much different.