I decided to go ahead and just throw several things I wanted to mention as one instead of making multiple posts.   From what I can tell "Scan for new and updated files", also scans files that are already in the db, which yes for normal libraries is perfectly fine, however when you have one library with currently 250,000 + files (adding daily) checking every file takes forever (this is all just my assumption but I'm pretty sure this is what emby is doing) as scanning the full library took way l