First thanks for your reply But as you can see its not running DX12 and actually im running windows 10 pro 1803 and i played Deus Ex Mankind Divided with DX12 . another problem is this game DX12 hasent released yet so why PUBG works with crossfire in DX11 and both of these games are running on UE4 ?
Second the game is working fine and both of my Gpus are working perfectly so thats not the point that I mentioned . As i said The problem with crossfire is Texture Rendering Bug and screen flashing . I couldnt understand why AMD would encourage people to use CFX But when its come to support . we couldnt request any thing. We are the consumers But when we request something We expect AMD to answer Us not other consumers . At the other hand they could optimize every benchmark to prove that they Crossfired Rx 480/580 could beat gtx 1080 but when it comes to gaming they wont spend much time about CFX.
Conclusion : Do not EVER Use AMD CROSSFIRE X technology because IT IS compelte waste of money.Buying a Single GTX 1080 is way better than USING CFX Im mean even a single RX 580 is way better than 2 of them working in crossfire.
R.I.P ATI TECHNOLOGY.