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Vaillant 631 vr65 does Tado do proper modulation now?

I have a Vaillant 631 with vr65 & vr470f (its actually currently using vr66 with vsmart).

Does Tado do proper modulation now?

i did purchase a full solution last year and returned as much as i can as modulation didn't work.

i have seen some comments that it does work, but nothing that provides me with confidence that its actually modulating and not just on off.

anyone have some definitive info that modulation works with vr65?

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