I really like Windows 10 much better than 8.1 and 7. To me it's speedier than the older Windows and it has a cleaner looking interface. I know that improvements were made to audio core over Windows 8 and 7 but I still prefer to run audio out via WASAPI if I'm listening via J. River or ASIO if I'm editing audio inside Sound Forge 11.
10 is definitely is more compatible with Sound Forge than 8.. I had major problems trying to run Sound Forge 11 on Windows 8.1 but 10 fixed my issues.
After major updates on the Fast Ring it does seem to always want to take over file associations back to the Windows default programs. This is easily rectified in the Default Programs option within the Control Panel.
I like 10's File Explorer better than 8 especially when copying large files. There's more info presented about the transfers anticipated duration and the transfer data rate speed.