I’m looking at finding ways to reduce MetaHuman file sizes and it seems that exporting and reimporting the FaceMesh.FBX reduces it from 344mb down to 74mb. This is great but I can’t figure out if it’s losing anything in the process (Surely 3/4 of the size isn’t lost without a reason.) Has anyone else tried this? Do you know what gets removed and if they’re still useable?
Yep it never ever works out for me.
The export/import is not bidirectional anyway, you’ll screw up something 99.9999% of the times.
Usually materials are the main culprit but in the absolute madness of metahumans I suspect pretty much all the blend shapes will be bodged for some reason unknown to humanity 
They seem to keep the morph targets from what I can see, but I totally agree. Everything is so overly complex trying to edit anything is such a nightmare.