Hey Sir_Highness,
To answer your tree evauluation question, you can optomize a tree by turning all the same color parts into single meshes to reduce the amount of baseparts within the model! This will help improvise performance. (I didnt need to do it in this pack, since they already used meshes) and then, I turn on LODS on all of the meshes in the tree model. (Trunk, Leaves, Ect) By going to… RenderFidelity > Performance. And then I can enabled LODS on the model its grouped to. Which also helps performance. Also, in the normal forest pack, if you removed the surface appearance texture from the leaves mesh it appeared a gray color. This is because the color of the mesh is gray. If you use Streaming Enabled, then in the distance you will see gray blobs. So I colored all the meshes to look their propper color.
Kind Regards,
Dom