by ecomaniac » Sun Feb 23, 2020 1:01 am
I experienced the same slowness as you. Because cifs/smb is much faster in my setup, I gave up on Rsync and am now using Robocopy with the /mir switch (among others) from a batch script on my Win10 desktop. I've automated it via task scheduler, and it's now working a treat. The mirror is on a second, older NAS on the same LAN.
HTH