Lightroom Desktop: Syncing Issues when Originals are stored on a NAS

Hi Rikk,
besides the outage, I am trying to sync my cloud stored data since several weeks on my NAS (Synology), connected via Gigabit Ethernet. in the beginning it works fine but after 10.000 pictures and movies its not going further (I have about 35.000) and plenty of storage. LR freezes, have to start again then additional 2-3 pictures are synced, that's it. Also I can't use LR since then (open pictures, look into people etc.), when I disconnect the NAS I can work, but not sync. Dont understand why this is not a background task and does LR really look up local backuped NAS Data when I work on data (should only be a backup?). Its frustrating, as this would be the major advantage of the solution?? Any Idea?Note: This conversation was created from a reply on: Lightroom CC: Mobile syncs but desktop app doesn't.