Hello!
A have a Radeon Rx480. In the new version of drivers and adrenaline i can't switch on 10bpc (no this option in the combobox) color depth. On the early version of drivers and software it always work fine. No any changes to display/hardware/operation system were made. Only update of drivers were made.
It's very importend for - picture on my display looks fine with 10bpc!
Please help me.