Thanks bro. Been using hackintosh for more than five years yet I knew the DVD app provided such feature. LOL.
StartUp Items under "Users & Groups"? There's no significant change since 10.12.x (I have no AutoStart App on it since Clean Install), but on /Library/LaunchAgents there're some *.plist about Logs (or maybe for CrashReport, I'm not sure.. it' s still in Beta). This is just dependency issue with my Nvidia graphics (GF119) since 10.12 that caused WindowServer crash after Login Screen.
DVD Player.app - Help - Show Supported Features.
Apple seems to spare no effort in windowserver since 10.12.