Any one know how to solve the lack of shadows on the Virtual Heightmaps Mesh using dynamic lighting?

I am doing a Displacement setup for this landscape, wich i could achieve but now i have a total lack of shading or shadows, I have a Virtual Texture sample and break it out as a material for the mesh however nothing is looking right, I also tried a blank material to see if it was my material on the wrong but it has the same results. I have been trying moving a lot of options here and there but having to compile shaders every time i have to re-start unreal is getting too annoying and very time consuming.
Do any one has encounter this problem before?
Virtual heightmap mesh >


Landscape >