@Gary1234 

WiFi 6 specs only apply to the wireless bands provided by the X20.  They do no have anything to do with the ethernet speeds.  You are pretty much getting your current full bandwidth via ethernet with the current speed package.  If you were to upgrade to 100 Mbps you could reasonably assume that would be the same result with the new speed.  I would say 95-98 Mbps would be reasonably achieved.  I would recommend Cat5E cable at least though.