Xbox Getting all Synced up
Xbox Insiders who own a FreeSync monitor can now test the adaptive synchronization technology with their consoles by visiting the Xbox Insider Hub and following the instructions in the “Test FreeSync” Quest. The “Allow variable refresh rate” option should then appear in the “Display & sound” section of the settings menu.
If your monitor supports a built-in FPS counter, be sure to enable that so you can see exactly where FreeSync kicks in to improve your gameplay experience. This is currently available in all Xbox One Preview Rings, and all you need to do is connect a monitor that supports FreeSync over HDMI to start seeing the benefits in-game.