The offical document of the activision suggest Radeon Software version 19.10.2. Yet it can not be install on the bootcamp machine.
The current Drivers of bootcamp is 184.108.40.206 , last release in 5/1/2019,which is not be allowed to play the game.
I have already contact the apple Customer service and they suggest communicate with AMD to get more detall.
My computer is iMac (Retina 5K, 27-inch, 2017) with Radeon Pro 58.
ps:i may have same question in a worry section at graphics,should i delete it?