View meshes/foliage from far away


I try to expand/edit an existing Landscape from the Store out of “Photorealistic Landscape Bundle 1”
In those Landscapes is a lot of nice foliage, the problem for me is, that it fades our very quick and i need to see it from far away.

I played around with the Cull Distance, mipmaps and foliage.LODDistanceScale, but nothing worked for me yet.

Someone has an idea how to solve this?

Thanks and kind regards.