Tomb Raider Vsync is working fine here, also to clarify the performance improvements are mostly on the DX11 draw calls, so from what I understand it should help on cpu heavy scenarios and should close the gap with nvidia on lower resolutions, it would be nice to see an AC Unity comparison between 14.12 and this, if I remember right one of the reasons given to why it was running so bad was draw calls, I don't have Unity to compare myself.
The release driver for Fury X already had the improvements from the W10 drivers, I don't think there will be much difference.