extended mode starts in windowed mode even if I set dx to fullscreen on start up, however it
can alt+enter to fullscreen.
Thanks for your feedback. Don't forget there are number of reasons for judder. With RC1 we were having judder in extended mode due to not being able to go full screen reliably. With extended mode that'll always be a risk. Direct mode tends to isolate these problems and judder in direct tends to be low frame rates.