Use the Toggle High Quality statement to turn anti-aliasing for a movie on and off. With anti-aliasing off, the movie plays faster. Toggle High Quality affects all the movies playing back in the Flash Player.
A Toggle High Quality statement assigned to a button lets the audience adjust the playback quality of the movie. The following action turns anti-aliasing off with the first click, and turns it on with the second.
On(Press) Toggle high quality End On
You can also use the _highquality property as described in Global properties.