It runs in realtime on a fast multicore CPU. I couldn't record in real-time because when I save out .png images each frame, my framerate drops to about 1. The rendering is actually the fastest part; the meshes are being drawn about 10,000 times each frame, but it runs well on a good GPU. Including shadows, it's about 4,000,000 polys each frame.
Total scene polys without LOD:
terrain = 8.3 million
meshes = about 600,000
grass = 36 million
Total scene polys without LOD:
terrain = 8.3 million
meshes = about 600,000
grass = 36 million