Issue
You may experience that a minor change to a placed module in a file caused a huge file increase after saving the file and notice that every save action will cause further file size growth.
Cause
When you place a Hotlink into the file, it is only stored once and is multiplied in the actual memory. However, it is not possible for drawings, they are multiplied in the files as many times as they appear on any of the Drawings.
Solution
It is suggested to open the Drawing Settings and untick 'Store Drawings in Project file'.
This way, the file size has dropped to the original size. However, when you open a Layout for the first time, it has to be loaded, so it will be slower.