Whilst I don’t have UFH, I work around the Madoka’s useless 2c hysteresis and too wide modulation points by using Home Assistant. First, I got the WD curve dialled in for minimal to zero LWT offset requirements when the weather is gloomy. Then I set up a bunch of triggers to adjust the offset. It keeps our house within +/- 0.5c from the setpoint without shutting down the heat pump. When it’s sunny or not so cold out anymore, HA will shut off the heat pump at 0.5c over setpoint. I don’t like the reliance on the Internet and Daikin’s API but it’s preferable to the Madoka’s behaviour.
More details here: https://community.openenergymonitor.org/t/homeassistant-control-of-lwt-via-onecta-cloud