I'm currently working on a space station map for Gmod. In Half-Life Ep2, where I tested the map because I can reload the map far quicker than in Gmod, my lighting looked fine. However, when I load the map in Gmod, surfaces seem to become extremely reflective. I don't have HDR or Bloom enabled. What is causing this and is there any way to prevent it? Here are some pictures.
The problem seems to be mostly with white-ish textures.