My experiences with are mediocre. It hugs the centerline and crosses it regularly, swerves hard, turns late every time. On straight freeways is ok, but is horrible in traffic with semis in adjacent lanes. I don't use it. It is an accident waiting to happen.
I found it liked to be really close to semis when passing them (in the passing lane, on the left, peroperly/lawfully), but when in the right lane it liked to sometimes hug the right side, particularly in corners, but even in straights it would hug the right shoulder and go over the line and turn off. If I fight it in the latter scenario, it fights back. If I quit fighting it, it veers over the right line and gives up anyway.
Then on the two lane roads, it sometimes liked to hug the center line too much but would fight me to stay too close to the centerline.
In freeway construction zones it followed the 'jogs' back and forth, but it would always respond too slowly, like you would expect a drunk person to do, almost going off the road and getting too close to the lines on both sides as the lanes moved left and right.
Surprisingly, it does still work on my local rural two lane roads that only have a center line (no shoulder stripe). In that case it still drives pretty close to the centerline, but it's appropriate. Which makes me wonder if it is just programmed to find one line or the other, and not use both the shoulder and center line on other roads to position itself in the middle of the lane.
As for my, my spatial orientation has tested in the 99th percentile, I also drive a 45' diesel pusher RV (I can parallel park it on city streets), have spent lots of time at tracks with car clubs, have never had an accident in over 3 decades of driving, and I'm very aware of my vehicle dimensions and position on the road. So, if anyone at Jeep is reading this, I can promise you my perception of how the Jeep is 'driving' and positioning itself is quite accurate, and mirrors what everyone else here is observing. (We're not just bad drivers who don't know what we're talking about, although those types of drivers certainly exist).
It's still nice to have on long trips, as it relieves a it of the muscle stress of actively steering, but it adds a different kind of stress via 'uncertainty'.
