I've created an exterior terrain scene in Unity 5 which features lots of trees and grass but some textures look awful and I'm wondering why. Please see the attached image:
This texture problem is especially obvious at night (I'm using Time of Day unity asset for Day/Night cycle) but also during day light it doesn't look good. The tree bark looks like plastic and also the ground textures are too bright and lack contrast. Stone texture on the other hand look perfectly fine.
Can somebody point me into the right direction of what I'm doing wrong here with my lighting and rendering?