My Airbus' limit rudder deflection as per this curve:

Then, that deflection has the Rudder Aerodynamic response. So, try the rudder below 160kts, to see it's true response, as above there, he is limited by the system.
Or, turn off the FACs on the overhead, then do 210kts with Flaps 1 (not 1+F, just 1 is slats only).
Kind Regards,
Josh