I forgot to mention the frame rates I got. Most everywhere, except zoomed in high density tree area, I get 60 fps (my max). However, from the tower of the flak base I get 15 fps. That's with almost everything on max, except Environment=0 and Post Lighting Disabled, with adaptive MSAA on the GPU. 3GHz E8400, 4GB RAM, HD7870, Win XP. I notice that exit of the terrain takes quite a few seconds to get back to the terrain selection window.