No Crimson driver above 16.3.2 will work properly. It will cause the monitor to go to powersave during install. Restarting the monitor will display the image again, but the issue will happen again every time win10 starts. Or if I try to enable crossfire. Just goes black, I have to powercycle the monitor. In any case crossfire will not enable.
The only driver that works is 16.3.2. Anything more recent will exhibit the behavour mentioned above. It's highly frustrating.