Grass foliage in the distance bright

Hello everyone, I have the following problem.
I’m a beginner creating a small landscape for VR

Now I have the problem that the foliage grass is displayed brightly in the distance (but not quite close). The closer I walk the grass becomes “normal” I’ve been playing on the Cull Distance settings but can’t get it right. What I have done wrong? What do I have to change?
Screenshot 2023-04-20 111214

Greethings from Nicole

It looks like a bad LOD. You could either change the LOD distances in the mesh, or delete that LOD.