Are you referring to playing movie from hard disk or from a burned DVD?
If the movie is stuttering if played from HDD, it is possible that ripping was faulty for some reason. Ripping it again can solve. Maybe you can try to use DVDFab Decrypter or AnyDVD just to exclude DVD43 as cause. Bear in mind that DVD43 can interfere with both software, so is better to disable (or uninstall) it before to use a different program
If the stuttering playback is from a burned DVD, most of times the cause is a bad burned disc. The most frequent causes of a bad burn are a low quality disc, a wrong burning speed, or a not updated firmware in the drive.