I have the same problem with an Nvidia GeForce 6200 where I have activated the second screen (VGA). I also notices that the main screen has the window decorations while the second screen doesn't.
With this setup, the menus are so slow that they are unusable. This is clearly seems to be a compiz problem because if the window manager is replaced by metacity the application menus appear instantaneously.
I have the same problem with an Nvidia GeForce 6200 where I have activated the second screen (VGA). I also notices that the main screen has the window decorations while the second screen doesn't.
With this setup, the menus are so slow that they are unusable. This is clearly seems to be a compiz problem because if the window manager is replaced by metacity the application menus appear instantaneously.