Doesn't work here, crash as soon as Crossfire is running, when starting a game or after disable/enable
Last that worked for me was 18.11.1
Good to know. I was about to try the update.
Here is a good video that shows crossfire working on 18.10.2 and some of the most visible issues with Radeon drivers which I believe AMD should investigate since the issues observed in the video are not specific to crossfire, rather they are general issues, one with memory clock speed on 144hz, the other is a severe freesync bug shown toward the end of the video.
Here is the GPU Memory clock stuck at max when using 144hz multimonitors [time stamp at 2:55]
Here is the Freesync bug (when playing DX11 game, browser video will stutter severely with freesync enabled) [time stamp at 11:56]
Hopefully someone from AMD can look at this since I've reported both of these bugs to them months ago. The memory clock bug they fixed in 18.11.2 is a different bug that has nothing to do with high refresh rate. This is a bug that has existed for far longer.
The 2nd bug shown in the video definitely needs to be addressed since it has existed since the Windows 10 Spring 2018 April update and it completely defeats the benefit of freesync, turning the feature into a negative rather than a positive.