A week with 14.3.2
Pros
During limited highway driving following distance and exits seem better.
Hill YoYo behavior, I live in an area with a 25 speed limit and a bunch of medium size down, then immediately up hills, imagine a roller coaster. In chill it would go to the bottom of the hill at 27, then as it started up would drop to 24/25 and speed back up. 14.3.2 is much better.
Overall driving when there is nothing to think about except stop and go is noticeably smoother.
Cons
It pulled over for no reason twice, both places it chose had no shoulder, so it moved right a foot and stopped in the middle of the road. The 25 mile case had a school bus behind me driving normally and a large red pickup came by going the other way. The other time was on a two lane highway (55 mph limit) also with no shoulder. It tried to stop in the middle of the highway. Again there was a car driving normally behind me and a car coming by in the opposite direction. This behavior was enough for my wife and we are not using it with her in the car.
In our neighborhood area there are lots of squirrels. It has slammed on the brakes, saving their lives twice. One time was severe enough that our 80 pound Labrador was thrown from the backseat into the foot-well. I drove like that the first year here and now to spare everyone's beverages and the dog, I hope the squirrel gets out of the way and go straight. I would hope it would slam the brakes for the neighbors cat, but these squirrels are everywhere and its scary what it does.
On two of the hills in the neighborhood there are single black skid marks in the middle of the lane. It looks like something black bottomed out and dragged rather than tire marks. This causes serious brake stabbing and slowing.
Jerks the wheel, hesitates and brake stabs more often than 14.2.2.5.
No Diff
Nav is bad, Does not seem worse. Parking lots are more confident, but it doesn't make sense where it decides to park about half the time.