Well, I've been making a very, very long animation in Flash, and it's getting kind of large, file-size-wise. (The FLA; I'm not talking about the SWF.) It's nearly 30 MB now.

Now, when I work on it, Flash is starting to lag. (Flash MX '04, not Flash Player). This is starting to get annoying, since I have to wait a few seconds every time I open a symbol or scene. And, it's bearable for now, but, it's not even half done yet.

I know that webdesigners always try to promote spreading things across different files, but for purposes of making movies, I'd much rather have the final product be a single SWF file, no matter how large. But, then, that leaves me with the lag problem.

Any suggestions, ways of dealing with lag during creation (not during runtime)?