Spoiler: (Open)Whenever you move around the effected sectors, the textures vanish and split as seen in the above screenshots. I've also noticed that some of the neighboring sectors floor heights have bled into one another, causing some invisible lip effect across most of the kitchen, as well as around the outside on shot three.
I've done all that I could think of. I've even drawn in new sectors, and all that has done is either make the problem worse, or just move it into another area close by.




