The size of the file is 168mb and it's nearly impossible to work on the file because every action takes like five minutes or so to complete. The artwork is of a scene filled with characters and I so far outlined the entire thing with a brush and afterwards expanded all the strokes thinking it would help ease the load. However, the file is still way too big. Is there something I can do to make it easier to work on the file?
Edit: I flattened transparency and got it reduced to 33mb. Huge difference, but would like it even smaller if possible.