Since driver version 440.44, using VR is extremely unpleasant. I’m not entirely sure what is wrong, but something is not right with motion. It might just be a delay of some sort, but I have no idea how to judge that. What is clear is that it causes dizziness in minutes. Since this is the driver version that introduced a fix for G-SYNC causing tearing (which affected me), it may have something to do with that. Note that this happens with in SteamVR home, which consistently runs at frame times of around 7 ms, so it is not a performance issue.
I also tried the recently released Vulkan Beta 440.48.02, but this driver is the same.