In General, this modification corrects the glitch R* with facial animations. Now when you talk instead of the shake of the lips can see high-quality animation of the opening of the mouth. The animation was selected for a long time that almost always coincides with the sound.
We can assume that it is a simplified version involving only the animation of the speech of the characters. Unlike the first version of the Fix the Facial Animations in this version fixed bug with disappearance, displacement and effect of a broken lower jaw, so now the animation is compatible with absolutely all the characters, which are set up facial animation (almost all the original models).