I have two laptops on my home network, one connected via WLAN, the other via LAN to the same router.
I frequently connect from one laptop to the other, using SSH, which always worked perfectly fine until recently. The connection is always established from the notebook A, connected via LAN.
Now when I connect from one to the other, the connection suffers from latency to a point where SSH states that the connection has timed out as the second notebook doesn't seem to answer anymore.
The SSH server is a Xubuntu 17.04 and the client is a Debian 8.
I do not understand why this connection has become this laggy, as I didn't change anything from the setup as far as I know.
How could I identify the culprit for these issues and possibly fix the problem?
edit: I do use
-x as I want X11 forwarding, if it matters