I'm trying to create a very simple 3D render of a floor plan including the 2D spaces for a planning document. This seems to work well in orthogonal view, but once I put my view into perspective, my spaces seem to start to float. All spaces and and my layer are set at 0" height. When zoomed in, the spaces are where the should be, on the ground underneath my walls. As I zoom out to view the first floor of the whole building, the 2D spaces start to rise through the walls until they are sitting on top of all my wall drawings.
I've included a Zoomed in view of part of my plan (spaces on the ground where they should be), and the same section when zoomed out (floating spaces)
Any help as to how to fix this or understand what is going on would be appreciated.