Character Pathing and Sound

During the last few days I, and a few guildies, have noticed that other characters on the map (including our team mates) are bouncing all over the map, disappearing into the scenery, falling from the sky, auto running into walls, and not appearing in the location where the player actually is. We have also seen story instances where there is no audio at all. We caught a video of one instance of it: https://www.youtube.com/watch?v=y21zikVJKd0&feature=youtu.be