Slow SSH login?

Hello,
Firstly, thank you for the ELK OS.
I am developing a direct to RASPA application on a RPI4 with HifiBerry ADC+DAC Pro hat and
everything goes well except for a minor annoyance;
Every time I log into the target board via ssh mind@IPADDRESS, there’s a few seconds delay before the password prompt appears. I ssh into other RPIs on the same network and login is always instantly. The target board is connected over Ethernet.
Thank you.