Have a look at the fills you are using. Especially busy dot patterns will make files heavy.
4 big sheets at 4,5 MB is not that big though.
For comparison, I've attached an older projects detail booklet, sits at just under 4 MB, with quite a few busy dot and concrete patterns.
I should add that I don't mask off huge fills in details, maybe this makes some difference.
Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nlArchiCAD 9-26NED FULL
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