Server Version#:PlexMediaServer-1.40.3.8555-fef15d30c-x86_64_DSM7
Player Version#: Does not matter
There is an option to scan my library periodically. In that same area there is a option to include Music library in the periodic scan but an admonishment that the maximum number of watched directories; this may cause problems with large music libraries.
My question is what is the upper directory count prior to issues? Hundreds, thousands, tens of thousands, ??