RemoteFX settings for Windows Server 2012 and 2012 R2
Enable the following options on all Terminal Servers in your farm. Under Computer Configuration\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Remote Session Environment enable the following:
Configure Compression for RemoteFX Data. Set to Optimize to use less network bandwidth.
Configure image quality for RemoteFX Adaptive Graphics. Set to Medium.
Enable RemoteFX encoding for RemoteFX clients designed for Windows Server 2008 R2 SP1
Configure RemoteFX Adaptive Graphics. Set to Let the system choose the experience for network conditions.