Iv done a comparison between UDK and rocket, the exact same setup. If i increase the high and low param in rocket it does tessellate, but its like 10 or 20 times higher than UDK. this then makes the mesh look really messed up and not as subttle as shown in UDK, and makes it next to useless for any smaller meshes. notice on image 2 that the mesh in UDK has clear visible deformations when it intersects with another mesh
