The lag issue is certainly not overblown by anyone saying it's unusable. The program is usable as there is a work around by using the vintage eq mode.
Those on this forum are relatively intelligent people, and we know to turn off the other apps that might be currently running on our devises, this has been discussed numerous times here. I for one, have this on a dedicated iPad with minimal other apps as its dedicated to the 1608 exclusively. And yes, it's an ipad3 with ample capacity.
It has NOTHING to do with spending more money on a mixer, either analog or digital. The MF software worked perfect on V.2, there was no lag either on accessing the eq section or in operating the PEQ functions. The disconnect came with the implementation of V.3 it's obviously a problem inherent to that version and it's an issue that mackie needs to resolve. Just like the white noise issue in the previous version was brought to the attention of Mackie/Loud by users of forums such as this one, this issue of the lag is being made known so they can work on the solution. Bringing up a flaw in a program is certainly not whining "winning", so get your story straight.
As we speak, I am downloading to YouTube a display of the lag, and will post the link after it is active. Others have already done this for our benefit.
Go to YouTube and search for Mackie v.3 lag
Sorry about the lousy production value since its 5:00 AM here and I'm trying to not wake up the rest of the household and holding one iPad while trying to move the faders is a little tricky.