I'm making a project in a blender and the road has a normals map. However, when I add the normal map the light is offset. This is really annoying and it ruins the scene. I am using blender 2.8, but this also occurs in blender 2.79 for me. I have the image set as no color data, and I have inserted the normal map node. Hopefully, someone can help me. I'm probably missing something obvious but take a look at the pictures.
I'm not sure what the normal map is doing but try turn the roughness down to see if it can combat whatever is happening. Also try applying a different normal map and see if it still offsets the light, and post pictures of the results.