I have a nVidia GTX 285 with recent WHQL drivers. CloD plays beautifully for me with latest patch - no terrain glitches and it is smooth. However, when I look at London from 20K I get an obvious boundary between terrain blocks as they transition from high def to low def. I've tried a variety of game and driver settings but it never changes. It's been like this thru every patch since when I originally installed on April 8.