ectotec pro 937 vui with evohome and opentherm

hi guys can anyone advice on my setup?
i have a ecotec pro 937 vui with the opentherm board in it and its controlled via evohome i have recently started logging its behaviour in domoticz and grafana.

im wondering if it firing too much obviously gas is going up and id like to minimize its usage i currently have 2 rads calling for heat during the day but there are 4 that are bypasses 2 towel rads they do have manual trv's but opened right up and hall rad and downstairs loo with no trv


i initially started monitoring it because the wifes office never seems to really heat up it calls for heat for 3 hours to heat it up to 20 deg from about 16.5/17 deg mine takes 2 hours to do the same but then mine just keeps climbing likely due to boiler being in the cupboard next to me and the pc in my room.

i suppose is working in that its maintains the temp of her room more than mine

But i do wonder if its firing too much
this is the flame on from this morning it seems to do it every 5 mins at times


this is the modulation level
at the same period


i think flow and return if ive selected the correct values



anything else that would help?