why is it Postgres db…

Why on earth are you using that? Just use WebDAV, you’ll only be required to have some WebDAV server such as Nginx and it will sync GB of notes without issues. joplinapp.org/help/apps/sync/webdav/ medium.com/…/build-a-webdav-server-with-nginx-866…

I would’ve NEVER ever moved to Joplin if it wasn’t able to sync with WebDAV. I’m not into having a special daemon running on a server for that task, makes zero sense.