Local Group Policy Editor

Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Remote Session Environment > RemoteFX for Windows Server

Configure RemoteFX  – Enabled
Optimize visual experience when using RemoteFX  – Enabled
Optimize visual experience for Remote Desktop Service Session – Enabled

Use the hardware default graphics adapter for all Remote Desktop Services Sessions  – Enabled
Configure compression for RemoteFX data – Enabled
Use WDDM graphics display driver for Remote Desktop Connections – Disabled