In seriously, are you sure?, then, i could make a test with de 3d mark software, to compare performance between directx 11, 12 and mantle, of course if i could buy it.
Install the Crimson 16.2 drivers and add the 3Dmark executable to Radeon Settings and set it to High Performance mode.
To configure an application to use the discrete GPU you need to open Radeon Settings > Preferences > Additional Settings.
In CCC Slim, navigate to Switchable Graphics Application Settings. This area will allow you to select which 3D application uses the Integrated GPU or the High Performance GPU. Add the application to CCC and select High Performance Mode to ensure that the High Performance GPU is used. Note, it is recommend to have the laptop plugged in and Windows configured to High performance mode in the Control Panel > Power options to ensure you get the best possible performance.
got exactly the same error, ever since the first crimson drivers, tried them all (currently on 16.2.1), always the same error when trying to open "radeon settings"
"No AMD graphics driver is installed, or the AMD driver is not functioning properly. Please install the AMD driver appropriate for your AMD hardware."
GPU: HD 8970M