I've readjusted my d3's to maintain 15gh. I've always felt that the "default" settings was too high and Bitmain did that due to market pressure. Much more stable.....
I totally agree. They just overclocked the shit out of them. But then they put out this firmware claiming it fixes the "one board xxxxx xxxxxx xxxxx fallout. Well, it did that, but now the whole thing goes all X's and it crashes every few hours. I just clocked them down and I'll see what that does. 537 is definitely "redlining" it.