Running UE 4.22.2, we are currently experiencing multiple problems resulting in decreased performances when using AMD Crossfire:
In “AFR Friendly” mode, it has a performance drop and graphical corruption (Major graphical corruption with AMD Crossfire's AFR Friendly mode - Rendering - Epic Developer Community Forums).
In the “Optimize 1:1” and “AFR compatible” modes, the application seems to be unable to detect any GPU, making it drag and run at an average of 3 FPS, rendering the game unplayable.
Are these known issues with AMD Crossfire? How can these be fixed or worked around?