I have the only Tesla for many miles and I drive one section of divided four lane road several times per day in both directions. This road has breaks in the divider which curve to the left (the opposing traffic side). AP2 on 17.17.4 would follow the curve on one of these breaks every single time - I always had to break autopilot's path to avoid ending up in oncoming lanes. Couldn't tell why it did it - but same spot every time. 17.26.76 has completely aced this same section. Yes I have the "short videos" uploading to Tesla. Maybe they helped? Maybe dozens of autopilot breaks in this area over a few weeks flagged the system somehow and this got pumped into the neural net training? All I know is it wanted to crash there every single time. Then I turned on the video uploads - now 17.26.76 installed yesterday and it aced that spot on the very first try.