Hi intoxicat3 -
That would lead me to believe that it is a setting associated with either the material or the mesh itself.
Have you tried recreating this issue with your materials, meshes in a new project, so literally just the meshes in the one area you have above?
I will probably need to see screenshots of the mesh properties, material setup and light detail panels or have access to your project to diagnosis further, but I am trying a few things to see if I can reproduce the issue.
Thanks
Eric Ketchum