Using Apple BootCamp Driver 17.10.3101.1006 on a 2016 iMac 5k with Radeon R9 M395X running Windows 10 version 1703. The drivers are current as of the creation of this post.
Seems that after the display goes to sleep and comes back, the mouse cursor is often corrupted. I also see video corruption in other programs occasionally (e.g. Chrome window goes black with purple pixels here and there).
Don't play games so I can't comment on that side of things... but the last software update that the Apple Updater gave me for video has definitely resulted in a quality decline. I believe this coincides with AMD delivering the drivers directly but not entirely sure.
Would be willing to rollback but I'm not even sure if that's possible using the Apple update software. Any ideas?