MQTT on the latest firmwares (Nuki 4 Pro)

I’m currently still on 4.3.10 because, after months of bad experiences, this is the first firmware having zero MQTT issues. It works reliably 100% of the time now.
I hate having old versions on my devices and I’d like to upgrade, but I have to be sure that the last FW (4.4.8 right now) causes no issues, since as far as I know downgrade is not possible.

Anyone using MQTT wants to share their experience?

Thanks