I don't see how the speed of my burning is an issue, since making it to ISO and then mounting it as a virtual drive should be an optimal burn, but I'll give it a shot. Same thing with defragging. I'll try reverting to an older version too.
Oh and I did some more testing with different media players.
With Windows Media Player. It hangs if I try to fast forward.
With Nero Showtime, I can go through the chapters but if I try to fast forward, it restarts it to the beginning. Also if I try to go to a scene that's on the first DVD, I would see the menu that says to insert Disc 1 flash for a split second and then restarts to the beginning.