Apologies again for the long post.
This is a follow-up to my post from the previous year:
The discussions there helped me finalise the working of multiple Emby servers that read from the same library with one acting as the metadata writer for generating all the nfo/jpg etc. and the others (referred to as metadata readers) reading those with their respective internet metadata downloaders disabled or uninstalled altogether.
Now that 4.6.1 has been released w