On my Synology NAS DS414 the rslsync process is running at minimum 30-50% cpu even if no peers are connected. Also there are permission errors shown for an inreasing number of my files.
Synology DSM and Sync version are altest (see below). I have upgraded Sync from version 2.4 recently.
DSM 6.2.1-23824-4
Sync 2.6.2 (1330)