I added a normal map to a MR arch & design material in Max 2012. I have a specular in the reflection color slot and a diffuse in the diffuse slot. As i increase the intensity of the normal map i certain faces get darker and they get really "obvious". Last time i was fiddling with this the exact same thing happened which made me quit normal maps and all. Some UV's are overlapping and the normal map is made with the Nvidia photoshop plugin. My scene just has a daylight system with a MR sun and MR sky.
Does anyone have an idea what is causing this?
As you can see the face gets shadowed as a whole. The face next to it has the same problem on the opposite corner you see the same effect but much less hard.