When playing with GTLREF lanes try disabling two cores and making it stable with just two This seems to be the best way with Quads. Then enable the other two and tweak them til it's stable. Might not need the same GTLREF increase on each core.
And about the upper post, yes... I 've seen right now how "magic" are those GTLVREF Lanes, and how crappy is the Auto value. I'm running 3.20GHz almost on VID, a bit more of FSB and SPP, and all playing with GTL.
I'm starting to see how wrong I was thinking that this board was crappy