Did you get your car with the 7kW or 11kW charger?In the end my "solution" for a bit faster charging was to upgrade my RCBO from 16 amps to 20 amps.
I can control the output of my EVSE from an app, so now I can charge up to 20 amps, giving around 4.2kwh. Still not that fast, but if I keep the battery above 10%, the charge time is more acceptable.