I have a i7 6700K fitted to my mother board Asus Z170 AR. The Problem is my memory 2 x 8 GB Kingston PC4 19200 does not work dual channel. It works on B1, B2. Why is that. Is it compatibility issue. I tried 4 x Corsair Vengeance LPX DDR 4 3000MHZ. Still same. It does not work dual channel.