It seems at least according to CPU-Z that running 4 x DDR4 in either all left hand bank or right hand bank, means the memory is running Dual Channel and not Quad Channel?
Only memory stick configuration options I show are 1-2-4-6-8 not 7 sticks.
Was hoping that the new BIOS 3105 release would fix my quad channel RAM issue. (Never have been able to get Quad Channel on this board stable). However for all those having issues, I have managed to migrate from the left side slots, to running two on left, and two in right with one in grey slot and one in black slot. This runs DDR4 in triple channel mode, at least a small step up from the Dual Channel config on the left side! Has anyone ever managed to get Quad Channel stable on this board???