After looking into this a bit more, it seems like theres something off in the skin binding script. I think there is something off about the way it picks barocentric coordenates for a vertex. I can alter how much a vertex is effected by the master, by moving the vertex next to it to be closer to the triangle.
The thing thats causing this seam, is that somewhere in the calculation of barocentric coordenates, if the normal of the slave is at a certain angle, then the vert will be given the coordenates as if it were entirely on the opposite side of the triangle.
High Poly Slave (Same number of edge verticies)
https://i.gyazo.com/8163456feac0f305e323...7d1c34.mp4
Low Poly Master
https://i.gyazo.com/c11a87d873d0218d75a5...675028.mp4
The thing thats causing this seam, is that somewhere in the calculation of barocentric coordenates, if the normal of the slave is at a certain angle, then the vert will be given the coordenates as if it were entirely on the opposite side of the triangle.
High Poly Slave (Same number of edge verticies)
https://i.gyazo.com/8163456feac0f305e323...7d1c34.mp4
Low Poly Master
https://i.gyazo.com/c11a87d873d0218d75a5...675028.mp4