R9285 & R7265 Crossfire, DX12

Hi from Turkey, antalya city. I have already R9285  2GB, I have crossfire support mainboard (asrock pro4 B250M lga1151), I want buy R7265 and i will try crossfire with R9285. My question, R9285 full support DX12, but R7 265!? is it problem for DX12 game? Do you recommend?