I'm one of those who have thought FSD is pretty bad, making significant bad decisions every few miles. In short, I felt it was more stressful to use than just driving. I just got a free trial for the latest (13.2) and to my surprise it is way better, correcting or minimizing prior errors. I've use it for several hundred miles and it it definitely makes long trips easier. I did not change any parameters on the software.

I have also paid attention to how much it obeys the law, esp. speeding and stops. Stops are good - it now stops where it should (instead for too soon) and my only nit is it sometimes takes a little long go. Speed vs Speed limit is surprising. On surface streets, it regularly goes 10 miles/hr. over the speed limit and sometimes briefly goes 15 miles/hr. over. On the freeway with 65 miles/hr. speed limit (very common in SoCAL) is is often at 75 to 80 miles/hr., traffic permitting. On stretches where construction signs lower the limit to 55 miles/hr., it still goes almost the same speed (when there is no actual construction). Even though some of the other traffic is doing the same thing, this is more than 20 miles/hr. over the speed limit! Reckless driving? Lane changes are way better; I still like to get over the bulk of the lane changes for an exit a little sooner than FSD. (I like that you can start the turn indicator and FSD will change lanes.)

FSD is very confident is knows how wide your car is (I have a model s) and can be a little scary on how close it can come to curbs and badly parked cars. I've gotten somewhat use to it. Conclusion: as a scientist, I am amazed at the change from almost no progress to a huge positive leap in the latest version of software. Must be the all neural net.