Since UseDNS no is not set to prevent the SSH server from attempting to resolve the hostname of the connecting client (not sure if this is cause of the way Tor is configured or conflicts). Could this be set? Also here are som other suggestions to add to the global ssh config (/etc/ssh/ssh_config)
> # Disable reverse DNS lookups (prevent hostname being sent?)
> UseDNS no
>
> PubkeyAuthentication yes
> StrictHostKeyChecking ask
>
> # Display a visual host key fingerprint connecting to a server
> VisualHostKey yes
>
> # Allow the remote server to use the same locale settings as your local machine
> SendEnv LANG LC_*
>
> ## Encryption & Security
> # Ciphers:
> Ciphers chacha20-poly1305@???
>
> # MACs:
> MACs hmac-sha2-512-etm@???
>
> # Kex Algorithms:
> KexAlgorithms curve25519-sha256
