This is great stuff you are sharing here, thanks. My system has been cycling like made today, gradually dropping the LWT. I have it setup to run continuously at the weekend and it’s too hot in the house, now 22C and it hasn’t shut off.
I’m going to try changing to fixed LWT and see whether I can improve things based on the feedback here. If you want to help on my system I’d love to go through the same process over on my post.