10. Q: I can fly through trees without receiving any damage.
A: Since Cliffs of Dover has more shrubbery in it than perhaps any other flight sim developed so far - hundreds of thousands of trees around the player - enabling collision for the trees grinds the game to a complete halt, especially as they need to be tracked around every plane on the map and not just the player's. Making collisions less precise leads to equally poor results, when planes may fly through a tree but crash into seemingly empty space.
We know this is extremely important. The solution is there, but it still eludes us.
Taken from Luthier's FAQ:
http://forum.1cpublishing.eu/showthread.php?t=19819