If you use the
D:OS support tool it will make a report.zip file containing (among other things) all of your saves (which you can then email to supportdos@larian.com, with a description of the problem and/or link to this topic).
If you just want to include specific save folders, you can browse to the '..\Documents\Larian Studios\Divinity Original Sin\Savegames' folder in Windows Explorer, select one or more save game folders, right click and select 'Send to | Compressed (zipped) folder'. Alternately, you could just open the report.zip file and delete the save folders that are not relevant.
If you save after Evelyn's house, quit, maybe reboot, restart the game and reload does the problem go away? There may be some kind of memory leak triggered there.
