Thanks for the time and support Luthier. I can imagine that it's not easy.
Serious question regarding tree collisions:
Often trees are grouped in clusters and forests, with a few standing alone. What if collision boxes were arranged such that an entire forest is covered by one box (or even just parallel planes like in 1946) . This would reduce the total number of boxes, saving FPS. The downside of course, would be more work on the map, fine-tuning these shapes.
Or, alternatively, each tree only has a 'trunk' collision region consisting of two crossed rectangles (four polygons max). Branches and foliage bend anyway, and many times aircraft have skimmed trees, taking branches home in the wheels or wings
So, having branches clip through an aircraft might be acceptable.
Are any of these feasible?