I'm having a similar issue. Number 1 is my object in the Substance Designer viewport and number 2 is the same mesh with the normals exported from substance designer and placed on the same mesh in the substance painter viewport.
Normals were baked in Direct X and imported into substance painter using the Direct X setting. I inverted the green channel but that didn't accomplish anything. Tried switching between Direct X and Open GL settings as well as baking out normals using open GL, nothing seemed to work.
I've baked normals in substance and brought them into painter using previous versions without any issues.
I'm on a Mac running OS 10.10
thanks