A lot of your base files (Forest Presets, 3D Garden Library, ForestIvy) contain animation layers, which to my knowledge are completely unneccessary. This really slows down my file loading and rendering. Normally when I see it is one of these meshes, I just load, clean and save them back and the problem is solved.
However, with ForestIvy the base files are *.pl format. I tried to rename it to *.max so I could load them and do the same resaving, but the *.pl file is something proprietary.
Could you please clean these files and resave them, or get rid of the animation layers inside them?
Thanks