I've got a Vega56 and AOC AG241QX 144hz with Freesync.
Since the Adrenaline update Frostbite games break with Freesync enabled, without Freesync they function just as expected.
In Battlefield 4 and 1, the FPS drop to 30-40 from far over 100, and textures/models bug out. Also the screen flickers very noticeably and DX12 mode crashes the game. If needed I can upload videos or pictures.