Thats a lot of terrain. Could you add more details on it? Why is it not publishing? Its probably going to take a while or might not even worka t all since its so large
Honestly, I do not think having terrain that size is necessary unless you plan to use its space. I would recommend generating a lower x and y amount. There is also an option to clear all terrain.
Hope this helps.
I believe in this case, the game actually IS publishing. It’s the fact that the terrain is quite large, so if you do publish, try to publish throughout the generating of the terrain to prevent lag, shutdowns, etc.