I bought a second amd video card so I could use crossfire and improve the framerate on Fallout 4. I was really surprised to find out that I can't use crossfire for Fallout 4. Why hasn't AMD decided to support a major title like this? My friends ask me why I've supported AMD (cpus and gpus) for all these years. I'm starting to wonder why myself.
as the poor cf and sli scaling is from the game not being scripted correctly for either , I've found using afr friendly and turn off 1:1 optimization seems the best to force cf , drivers alone cant fix a bad game engine