@mauve I hacked together something that works ok:
- make all substantive edits in markdown in VSCode, which handles 126k words flawlessly
- then convert via pandoc to odt
- open in LibreOffice to do the last bits of formatting. (LibreOffice handles formatting fine, it was just choking on things like find and replace.)
As long as I'm not doing too many last minute "oh shoot I forgot" edits this should be...bearable.