I have a thorough grounding in reality. With that in mind, my report of my first commute to the office on v12.3:
For the first time ever, it made the entire trip from my house to the office (35 miles, 45 minutes) and every single issue I had on 11.4.9 was fixed. I did not *need* to disengage for any reason, whereas on 11.4.9 I needed to disengage about 4 times. That's great.
There's only one (two) problem(s): For about 35 of those minutes, I had to hold the pedal down. Even my grandma was rolling in her grave, impatient. On every single road, the car was driving either at the speed limit or 5 mph below it, and had I not held down the pedal everyone would have passed me.
Other than that, I disengaged because the map route did not give the the ideal route, and I have no way of conveniently saving the ideal route to work.
So two issues to address for me to have intervention-free commutes to work:
1. Speed control is by far the biggest issue right now. Hopefully 12.3.1 fixes most of it, because right now the car drives like my grandma who passed away 20 years ago. And it doesn't drive as slow as she did then, it drives as slow as she does now.
2. Need a way to save a specific route so that I don't have to disengage every day when the car wants to take a slightly less-than-ideal route to get to work.
Fix both of these issues and my 45 minute daily drive to work will regularly be intervention-free.
One more note: Chill/Average/Aggressive doesn't seem to do a thing for me.