I'm not an expert, but I think this is more a GPU bios problem than drivers problem. (I've RX Vega 64)
The update seems to fix partially after adrenaline software loading, but this problem also happens in transitions between mobo bios post<->windows load and windows load<-> adrenaline software load, so the correction is more lika a poor workaround
CPU: Ryzen 1700X @ 3,8
RAM: 2x8 DDR4 @ 3333
MOBO: Crosshair VI Hero X370
GPU: RX Vega 64 stock
Connected with DP.
Deactivating freesync in monitor options avoid this problem. Being activated, it solves after adrenaline load.