Help installing AMD Catalyst 15.5 beta (The Witcher 3: Wild Hunt)

Can anyone tell me about installing AMD Catalyst 15.5 beta?

Before installing it, Driver Sweeper removed all AMD Catalyst 15.4 beta drivers. I install then 15.5. Upon completion, in the Catalyst installation completion window, instead of a green checkmark, a yellow question mark is displayed and writes that warnings were issued during the installation. I click "Finish", the installation window closes, no reboot is required.
Catalyst and Game Evolved icons are not displayed in the system. Neither immediately upon installation nor upon reboot. In GPU-Z, for example, there is infa that 15.5 is installed.
Catalyst appeared in the Start menu, but clicking on all its icons does nothing.
And in The Witcher 3, the FPS has become lower.
Tell me, who is aware of the procedure for removing and installing Catalyst 15.5?