Hey. I spent the last few days doing some testing, and could not get this to work. Now, when I do -IP, nothing happens. When I do, just IP, like how the previous non enhanced versions work, I get a slightly different outcome. If my friend is in the game, I get a black screen. But if my friend is in the lobby, I get portions of the ground and the rest sky. This has been consistent when I have tested on LAN with my brother, and online with my friend. This only happens with IP, not with -IP. When I use -IP, the game just loads up as if I have not use any commands.
Have you got this to work yourself? If so, is it possible you could send me a recording of it yourself? From what I can tell, no one else has tested this online.