Hi I am running Adrenalin 2019 19.12.1 GUI/UI with Adrenalin 2020 20.2.2 Drivers on a pair of RX Vega 64 Liquid, PowerColor Red Dragon, Radeon Pro Duo, XFX R9 390X Black edition.
That seems to be the best option for me at the moment w.r.t Radeon Drivers.
It is an easy install process:
1. Install Adrenalin 19.12.1.
2. Download and extract Adrenalin 2020 20.2.2. drivers under C:\AMD .
3. Go to Device Manager and update Drivers for your primary AMD GPU.
4. Point to: C:\AMD\Win10-Radeon-Software-Adrenalin-2020-Edition-20.2.2-Feb28\Packages\Drivers\Display\WT6A_INF
That way you:
(A). Should pick up lots of bug fixes in Adrenalin 2020 20.2.2 drivers.
(B). Do not have to deal with the Adrenalin 2020 GUI/UI.
(C). Still have Global and Local FRTC independent of Chill_Max slider.
(D). You still get proper Crossfire/MultiGPU pairing selection control.
(E). You still get Crossfire DX11 Profiles in the GUI/UI.
Some problems though.
(F). There is no button to enable Radeon Boost in the GUI that I have found.
(G). The Chill Hotkey does not work - I cannot set ALT+W as my Radeon Chill Hotkey. Only option = F11.
I have filed an AMD Reporting form about that. Chill hotkey does not work in any version of full Adrenalin 2020 GUI/UI install from 19.12.2 to 20.2.2 that I have tested.