My Grass and such is procedural from Aaron’s Advanced wind grass,
the trees are from the open world demo, they have ~3-4 LOD’s each and a billboard, 5-6 total different assets.
also ive noticed, after i play the first time, each time after is fastish, like 30 seconds but that seems fine for the size ect,
also i want to add ive noticed without collision playing after the long load time actually works pretty quick, with collision is the one that takes a long time.
and the collision on the foliage is very minimal basicly one sphere per item.
oh and FPS with collision enabled is actually good too. just the loading times are brutal.