Render - Texture Problem

[Makiese]

Hello,

i currently have massive problems with rendering textures in a project. As soon as I try to render a project with a render level 3 or 4 (BEST) the texture of the ground disappears. It almost looks like an empty white texture layer is always inserted automatically. At level 1 to 2 everything is ok.
See more in the pictures. What am I doing wrong?


Render Step level 1 or 2 - OK
https://sta.sh/03l8twvgwyx


Render Step level 3 or 4 - FAIL
https://sta.sh/02e3w4ii7ikt



Render Settings - FAIL
https://sta.sh/01vg90jkhrjo



I use:

Sweet Home 3D Version 6.4
Java Version 1.8.0_202 (64Bit)
YafarayRendering-1.3.2

and pretty much everything about plugins that is possible at all.
The effect also occurs with all other render engines available for Sweet Home 3D.

Thanks for help in advance!

[Puybaret]

This could be the ceiling of a level below. Ceilings are visible from top and bottom at the two best quality levels.

[Makiese]

Dawm! You are right!
I have created several height levels for the floor. In one of them the ceiling display was active. I have already spent 3.5 hours with the search. Thank you so much!