Optimal RAM?

When some animation FLA files get too large or complex, the audio sync or symbol filter problems arise. I've tried by working in shorter segments, then rejoining either the fla files or exported videos or PNG sequences but that can cause problems too. (audio sync etc).

Has anyone solved similar problems with more ram? I'm only using 2GB but didn't see much improvement using another laptop with 6GB. I may upgrade to 8 or 16 - or would even consider 32GB if I thought it would help.

I realize this would also depend on the laptop's video adaptor. The two I've used are HP and DELL. The 8GB I'm considering is a MacBook Pro retina.