My knowlage is under average, so please someone correct me, but I think this is not best setup. Your errors are well above 1% because your hubs can not supply enough power for 3 sticks at that rate. Nextium hub is power supplied with 12V/2.5A which is insufficient for 3 miners @ cca. 4.5mh/s. At post #539 @racebyu is stating he has 2.4amps power draw per one stick @5mh/s. I repeat: I have no hubs at all, have only one stick and know less than average community member.