Speed processor version question

i have developed a videogame in flash 5. i’ve heard that both flash 6 and flash 7 have export features that make movies run faster (by which i mean closer to their actual frame rate on slow computers, ie, a movie that is 30 frames per second actually running 30 frames per second rather than less due to speed processor lagging).

if i take my flash 5 movie and export it with flash 7, will my movie gain these speed advantages?

if i reprogram my game with actionscript 2, will my movie gain further advantages in speed?

thank you
jason oda
emogame.com