motion is greate but it has some problems

i bot motion after getting Final Cut Pro X and i really really liked it.
i used it for a little wile and noticed a few problems.
i have like the seckend best macbookpro but wen i try to add lots of fx to a video clip my laptop gets really really glitchy.
the main problem witch is also with all your other pro apps as well as motion is that voice over works terribly with them.
please fix these problems apple.

dj_js about Motion, v5.0.7