Material/lighting issue with tiles.

Hi everyone!

We’re developing a sidescroller game and we’re having some problems placing tiles into an empty level. Every tile have the same material through different instances, and the problem is obvious, tiles shows some shading/lighting differences every of these ones. As far as we know, we were thinking about the importing method that we’re using so far, but we checked all the options inside the exporter/importer, and there’s nothing weird. I was reading a post that a guy made in the past, and someone was telling him to try to connect the VertexNormalWS node to the material, but I’ve didn’t try that yet. Any solution for this please?

Greetings!!