You don't need to use bUseCombinedObjects = 0. New leaves for most trees in the game world.
Vanilla Trees Redux version of the Commonwealth. Enjoy This mod is not opted-in to receive Donation Points. I've added a TreePlacementFix.esp to move some oddly placed tree's around Sanctuary, and a texture replacement for the Far Harbor pines. It adds much more depth and ambiance to the environment, while also not crowding scene's too much and generally keeping most lines of sight open. This mod changes all the tree's in the Commonwealth into mostly pines, and a few other types of tree's.