Quote - Just created a scene with eight copys of Genesis and the following morph sets installed:

Bodymorphs, M5, Steph5 as well as Iconic Shapes 3 (M3, V3, A3, F3 and H3).

The whole scene saved as 141 mb.

A single figure with all those morphs installed saved as 17.6 mb

That's pretty good IMO.

I think I figured it out.

If you save the figure to the library without external binaries on, the file saved in the CR2 is 195MB (in my case). If you save the PZ3 it is 200MB

If you load genesis with external binaries on, it is 12MB if you save it, no PMD file.

Now the culprit.

If you save a figure to the library without external binaries and then (in a new session with external binaries on) load it from the library and save it, it creates the same 12MB file but with an additional 61MB PMD file.

So the lesson here is to save figures with external binaries on to the library and to scenes as well. Once you save uncompressed the links to the original binaries are gone and the file gets huge. To be fair this is not a genesis problem, because the same happens with V4. Only the impact is larger because an uncompressed genesis is much larger as a V4