I am trying to paint these mountains with trees, but only the ones right next to me are showing up. if i fly around, they start to appear, but still only the ones right next to me. the others fade out.
Seems to have something to do with the LOD’s of the trees. As you move further away from them, they get less detailed and eventually disappear to improve performance.
Check the cull distance and the opacity. If you want to see them farther increase the cull distance in the foliage’s detail panel and with opacity go to your trees material(s) and try adding a scalar parameter and putting the default value at 10. Opacity really only works with small plants like grass or bushes but you should still try it. 