Foliage visibility distance + Lightmap density

Hi there, I’m a beginner on UE5 having 2 problems :

  1. I’m not able to get why my foliage is disappearing at long distance (quality is apparently decreasing as shown on pics) :

    I set Foliage.ForceLOD 0 in console but nothing happened.

  2. I’m trying to bake lighting on my scene as Lumen isn’t available on my Mac M1 Pro in order to improve renders, but following a well know tuto I can’t find Lightmap density in Optimization View Mode. Is it only available in archviz ? I can’t find documentation either.

Discovering UE felt astonishing but I’m not able to do even the simpliest thing I want (taking simple landscape pictures with Movie Render Queue). Is it again a Mac M1 problem ? Thanks in advance for your help.

Nobody to answer me ?