I am experiencing the same issues. Crash crash crash with iZotope especially. It doesn't matter if it is in Logic or Pro Tools actually. Switching between iZotope plugins causes the DAW to crash. I am on a 2016 MPB w/ Touch Bar running 10.12.3 and the latest plugin and DAW versions. It is a NIGHTMARE! Does anyone have any clue what is causing all this? I don't even know where to begin or who to report these issues to. I have sent in a tech support request to iZotope, but unfortunately found that they are one of the worst companies to deal with. So the question is, is this a 2016 MBP issue, an OS issue, or a plugin issue?