Ughhh, so no change to ELDA. Being unable to permanently turn that off is unacceptable. I'm on 16.2 and I *hate* ELDA. It's dangerous and makes the car not fun anymore; it's hard to remember to turn it off before every single drive.
Have you expressed your concerns with Tesla service? If your experience is as bad as you say and I have no reason to doubt you, then that should be your first step. Ask them to downgrade you.
In reality, if the feature didn't have the issues you are having, you'd have no issue having it on 24/7. That said, I have no doubt at all that they will get it ironed out soon and all will be well with the world again. I'm taking this thing cross country in a few days. Should be interesting.