Upgraded yesterday based on the general positive vibe of this thread. Haven't had a chance to test it in VR yet but what I did notice (and half expected) is that my old GeForce Experience v2.11.4.0 (which I've been clinging on to for Shadowplay recording 'cos I really didn't like version 3) no longer worked. Gave up and installed the latest version of GeForce Experience. It doesn't seem quite as horrible as I remember it. You still have to sign in to an nvidia account and the Shadowplay stuff is still a bit buried in a load of other superfluous "overlay" guff but hey, at least it works.