Alright, so I burned an AVCHD DVD, and I was only able to play it on my desktop. The laptop (PC as well), and my 2 DVD players wanted nothing to do with it. It was, however, a slight step up from the original DVD, but nothing at all close to the AVCHD I exported to my PC. I also burned another DVD after the 12.1 update, and it is identical to the original DVD I burned days ago. I cant hardly think this is normal, since in the past I have burned some DVDs using GoPro Hero HD and Hero2 footage out of PRe8 with better results.
Again, thank you for your time, and help, I really do appreciate it. This is really frustrating me!