DX12 is better than DX11, if u have two PC, one is some yrs ago,u will find how DX12 is running more powerful than DX11. and ubisoft made the game running under DX12 is so good to me, i can't run it at BF1. DX12 got more effect than DX11 and muti core CPU more efficient(u can google it for more info).
currently, i am running it at DX12