[klem]

Replace trees with a selection of large forest blocks with hit boxes. Build large forests from a few forest blocks.

Make a selection of different size Forest blocks with single hit boxes. A large forest can be built with a few larger blocks, a copse with a small one. After all where in CoD is there a historically accurate forest and who really cares if individual branches aren't waving? They could always put a perimeter of the 'no hitbox' trees round the edge if people want that. The individual stand-alone trees with no hit box don't matter and could stay. It might even be possible then for them to have hit boxes with the major quantity of trees now represented by a forest block.

That would also bring a huge improvement in fps.