This is an old issue. Every two weeks somebody will bring it up to the forums. Here is what I have on it: Cars with bogies are more prone to act on the self positioning of the points. Two axle cars are better. There are two solutions that work for me. 1) Move the lever away from the frog of the points, in fact, reposition it so that it is at the border of the spline circle away from the points. 2) Use HOTT animated points such as 9999:38101 3) Report if this helps. By the way, the problem has been around since several versions back, not only in the current one, always under AI, but I got it occasionally in manual!