You can try rclone, it's a command line tool though and you have to invoke it manually. I've been using to back up my photos to google drive and so far seems to

You can try rclone, it's a command line tool though and you have to invoke it manually. I've been using to back up my photos to google drive and so far seems to work. I can even leave it running and close my laptop, next time it just continues like nothing happened.