After an user login the armbian feed up the screen with a lot of info about the system status. It is not a fast ssh login.
All that stuff, although important, take time to get and prepare for display. So we need to wait more than we really want to wait even in a low load host.
To get rid of it we, and speed up the ssh login in an armbian host we need to do 2 changes:
Remove, or instead of remove a file, just change its executing permissions.
chmod -x /etc/update-motd.d/30-sysinfo
Comment out one line in another another file.
vi /etc/pam.d/sshd #session optional pam_motd.so motd=/run/motd.dynamic