Hi, thanks for the reply.
So, inside the house there’s a basement. The landscape material I was using didn’t have a landscape visibility mask, so I added one today. After that I masked away the area inside the basement, after that I rebuilt the scene at the highest quality settings to see how the inside of the basement would look.
So I made a building (using BSP brushes for the moment) with two floors and a basement and then simple masked the areas in the basement and rebuilt the scene. That’s basically all I did. I changed back the material and removed the visibility mask, but I did not remove the actual masked area, yet the landscape lighting stayed the same. So my hunch is that the masked area somehow is causing an issue?
I lack the experience to fully understand the rendering techniques involved. If you need more information I will do my best to provide whatever is needed.