Think I may have solved this - seems to be my texture sizes? I went in and removed the material settings for each moon (what a pain) and found that the meshes now load instantly. Even when entering an area like Jupiter where there are some 28 moons I dont see any noticeable loss of time when they come in range. Now I'll have to code in the texture part and see if .b3d format just sucks at loading textures or of the files themselves are just way too large.