Originally Posted by Ivan Fooker

You are correct, the trees are still a performance killer.
I guess it is the only model without a geolod on the map, that causes most performance troubles.
I am running my I7.920@3.99 ghz with 5870HD and flying with Vsync on 60fps...well off course not more.
However, when i fly over London or the sea etc i got no stutters, but flying low above trees or watching into a forest makes the game stutter.
It doesnt impact the fps but stutter comes up.Means the fps keep staying at 60fps.