Shadows on trees?

[III/JG53_Don]

Thats the point for him I guess (and for me as well btw ^^)
If you enable shadows you enable ALL shadows in game. This means your cockpit shadow, aircraft shadow of your and the other planes, and shadows of ALL trees and buildings in your surroundings.
This is why shadows are such a tremendous hit for the performance. The option to turn on just the cockpit/aircraft shadows would help a lot for the performance I guess as you can rather disclaim the tree/building shadows as the ones from the planes.