But is not the same as "Adaptive Vsync" and Enhanced Sync cant "Half Refresh Rate" feature. Nvidia since 2012 and modern consoles can give smooth 30 FPS experience - AMD not.
This really great feature. People who already tried it cant play without it heavy singleplayer games where 60 FPS is hard to achieve.
This topic more relevant https://community.amd.com/thread/219295