Gave it a go a few days ago and the experience wasn't exactly pleasant. Start button would not work unless I logged out and back in again and gaming performance actually went down. This PC has been upgraded since RTM (november update, anniversary update, both creators updates), and things were starting to break down so I did a fresh install.
Funny, the start menu was working fine until I installed drivers, then it stopped working again ¯\_(ツ)_/¯. Gaming performance was still bad, testing on the working 385.69 and latest 388.31. GPU clocks weren't switching to 3D speeds when needed and FPS drops were occurring very frequently.
Sorry, but if I can't use gsync and have proper FPS in borderless window, I don't need it.
I gave up and went back to 1607 and everything is fine again. I'll try it again once MS releases some patches and nvidia fixes gsync.
EDIT: I forgot to mention Edge was garbage as usual, would freeze everytime I clicked on a link