Try flipping your green channel of your normal map. Also make sure you have hard vertex normals at UV borders. For Maya, this script helps: http://jonathonstewart.blogspot.com.au/2012/10/script-harden-edges-of-all-uv-borders.html
- triangulating it fixes the seams! - I need to read more about the custom cages, when I bake (usually topogun) I just adjust the cage slider and make sure it encompass the hi poly and low poly, re bake (adjusting the cage slider) if there's too much artifacts on the normal, (is there a better way to do this? or how do I…