foliage and some meshes blown by light, why?

[ERAWYO_DONNAZ]

I’m using UE5 but wasn’t there to select.

when i place some meshes they are overly blown away by light
foliage the same, but as you can see in compare with the landscape is a very huge difference.

even if i lower the light sourse those still remain in high lighting.
please tell me why and how to solve it

[ClockworkOcean]

Have you tried different grass meshes ( from a different pack )? Also, try adjusting the sub surface scattering ( in the material ), and the specular.

Nice rock