What the floor looks like when rendering in either of the two high quality modes:
The floor will also appear like the top image even when another image texture is used or a solid color other than white is used.
What the floor texture looks like when rendering in either of the two fast modes:

Why is the floor appearing white while rendering in either of the two high quality modes? The floor's Matt/Shiny setting is set to Matt. Here is a link to the .sh3d file:
http://www.mediafire.com/file/wfutfc8s3 ... effien.zip
System specs:
- OS: Windows 7 64 bit
RAM: 4 GB
Graphics Memory: 512MB NVIDIA NVS 3100M
CPU: Intel Core i5 540M @ 2.53GHz
Sweet home 3D version: 5.3
Java Version: Version 8 Update 111
