Please email supportdos2@larian.com with the report.zip file generated by the D:OS 2 Analysis Tool (or a Dropbox or Google drive link, etc), along with a description or link to this topic.
Extract the zip file somewhere handy (like the Desktop) and in the AnalysisTool_DOS2 folder, run corresponding executable. It should detect the game install path, but if not you can browse to the 'Divinity Original Sin 2' folder. Optionally run the tests first, and then generate a report (it will be saved in the same location as the Analysis Tool).

The report will contain system and game information, as well as your saved games. To greatly reduce the file size, you can delete most of the saves from the zip (double click the zip file to open it in Windows Explorer, then browse down to the ..\Savegames\Story folder); keep your latest save, and if available, the most recent save where both characters were fine and the oldest where the first character has infinite source, and possibly the same for the second character.