I'm also on Rampage V currently... So you know where I'm coming from...I think the wifi driver for win 10 is still beta on the asus site... Also I don't know if you know this, but if you change any of the parameters for the CPU in bios (overclock, xmp profile, etc.) adaptive voltage doesn't work for the cpu, they claim it's an intel issue and never fixed it.
I think I'm going to roam the support pages of the top end boards for various manufactorers and see when they had the latest bios/driver before I decide on my next mb.