I gave up at 10.11.3, Apple was simply waisting my time, with no clue how to fix, no way to advise. I will wait, look again at the end of 10.11`s development cycle or 10.12 or whatever Apple names it. If same story I will just flip business to W10, have already been running W10 trial systems for several months, with zero issues.
Very much tiring of the annual update cycle, as it`s too much like rolling the dice, Apple is clearly incapable of releasing the desktop OS without a hoard of issues on it`s own tightly controlled hardware, and that I don't need.
Q-6