Video quality was "Medium", now set to "8Mbps 1080p". Attempting to change back to Medium (equivalent to 4Mb @720p) says "Uh-oh! Service error. Version mismatch (old 4, new 3).
Also the old problem of saying "Sync started", "Sync finished" over and over is back when not on the same LAN as the server.
Synology NAS server, 0.9.16.6.1993.
Sorry to be cynical but another poorly tested release...