Not bad for basically an animatic, some good detailed shots and I liked the size, I think it really worked well with the style. Nice take on Yotam and Max as well.
Aside from that though, 2 things:
First, I'm guessing you used a lot of bitmaps for this by the fact that the rough-assed pixels are showing like crazy. Solution: go into your bitmaps in the library section in Flash, select "properties" for each, and check "allow smoothing". Feels fucking good man, awwwh yeah.
Second, how the hell is this lagging so bad? Seriously, what everyone else is saying is true. I very definitely have a machine built to play Flash and I'm pretty curious about what could be causing the problem. If you think you might need a hand let me know.