Black Markings on SMs depending on object rotation

Development Rendering
1

I’ve been trying to check down the cause of this issue on Unreal Slackers but so far we’ve had no luck.

Depending on the objects orientation in the world i get these black marks on my meshes.

If I attach a light to my player character it lights up these dark spaces but they go back to black when I move away.

Any suggestions would be much appreciated.

I’ve checked my light map resolutions.
I have a second UV set up for light maps.
I’ve hardened my UVs in Maya.
No UVs were baked in Maya.
Materials are all Substance based.
This is the material I’m using: https://www.youtube.com/watch?v=q06xv6nlMHk&list=PLv5ClEuoNz-QtgD6noMFhKyTqbiif3ptF&index=70

2

What do the normals look like? Does it happen when a different material is applied? What does the normal map look like? What does the material look like in the editor?

3

It looks like either your normal maps need to be set to use Normal Map compression or the normals of the mesh are bad.