(Solved) Lightmapped Tiles Seam Blending Issues

I have developed a system for lightmapped prefabs, they sit on individual tiles and can be rotated. When lightmapping, there are slight color deviations between the tiles. Is there any solution for this? Something like running a blending filter over the tiles maybe?

 

Solved using a shader blending trick. Might not be the best solution, but it's the only thing I can think of that works. You will lose shadows/lighting data as well, but still looks fine in our game.

Code (CSharp):

1. fixed lightmapPower = clamp(i.uv0.z * _Blend * i.uv0.w * _Blend * (1 - i.uv0.z) * _Blend * (1 - i.uv0.w) * _Blend, 0, 1);

Essentially just blends at the edges of each tile. Where blend was set to about 2.5