New owner of a Synology DiskStation II+. Currently I run Plex on a Mac Mini, and have the media library on a local drive, which is almost full. I've read lots about how running Plex on the NAS itself ...

In order to use Plex’s automatic subtitle syncing, you must have the Plex Pass. The feature is otherwise unavailable.

This means that you can use Plex to access the entire Crackle library, with no need to switch between applications. It also means that if you use Plex a lot but have never used Crackle, no big deal: ...