however, when I'm switching menus using this mode movie is smooth, but I have problems you described using xv (0 - Radeon Textured Video). With xv (I used this all time) it's smooth. Maybe with BFS or using NO_NEW_FAIR_SLEEPERS Radeon Textured Video will be fine now (except corrupted menus of course )? We'll see
And, are you on an AMD or Core I5/I7 CPU?