This installed overnight on my Aug 17 AP2.5 MS and on first drive it started going nuts when stopped in traffic. I was behind another car on AP at the road lines on the display were flickered all over the shop showing curve to the left, right, middle etc very rapidly even though I was stopped. Then the car started juddering like it was trying to go but stop, handbrake and and off etc.
Very worrying! I am hoping it just needs to recalibrate itself.
On a plus point on open roads it seems to take bends better with minimal drifting over lines and better slowing down for sharper corners. I do with it would slow down before I went into a slower speed limit though so that I was doing the speed limit as i entered rather than slowing down once i entered the zone.