My experience with this is that, for the most part, a DVD will play perfectly up until some random point, once or twice in the course of a movie, where it will freeze. The audio will then manage to go on, but the video will be stuck. Then I think the audio will then get distorted trying to resync with a video that refuses to continue. To fix this, I simply press fast-forward once and then rewind once and the movie will then continue. Aside from that, the DVD menu is a little slow at times, particularly going from one menu to the next. But all in all, much better performance then I have ever had from MplayerCE.
Several versions before, and with MplayerCE, it would slowdown when going to the next chapter and then attempt to resync. To fix this I use to turn off the DVD menu which I guess was the same as turning off that dvd-menu-lib in mplayer CE, and the movie in the DVD would play perfectly straight trough. But of course not all DVD’s you could do this, especially Disney ones that seem to require that menu-lib. I am very pleased to say that this doesn’t seem to be the case anymore! 🙂