Hi,
I think all the textures of your assets are too bright. I always have to change the value of the texture.
I noticed that when I change the brightness or tint of the object (tree) texture. The lower resolution LOD’s are staying as they are. Probably they have different materials and textures. When I’m zooming out they are still very bright and the transition from high resolution model to lover resolution models is very bad. The same issue is with grass.
Please add also possibility to add just simple color option to the texture socket. Now all the textures requires to have some map plugged in. It would be nice to just set some color like it is in the base color socket. See below.