Hello,
I just receive the new smart presence sensor meross MS600 (using Matter) and my goal is quite simple to turn on and off the lights on a room ( and regulate the brightness based on the lux in the room)
All is working but it is extremely slow to turn off the light when there is nobody anymore on the room.
the result with the FP2 ( who is way more expensive) is not the same at all …
Did someone else play with the MS600? same issue?
To add more, it take exactly 1 min to turn off the light after detecting there is nobody in the room,
How u have configurated this in HA?
I also would like toi geht the Infos, how you hav configured it in HA. 
I had to factory reset this like 20 times and spend all day with this before I got it working, in part due to unrelated issues, but just wanted to share for anyone else that finds this in the future, you need to setup Matter first after the factory reset of the device. This is because if you setup the Meross app first, the device will end up in a state where there is no way to get it back in pairing mode for Matter or generate temporary setup codes, unless you factory reset it again (Dumb design).
Do NOT go through the set up in the Meross app where you scan the QR code or select the model. Once you setup Matter with HA using the Companion app, the device will be on the Wi-Fi, and the Meross app will pick it up right away when you hit add device from there.
Mine is working perfectly now. I can fine tune the settings in the Meross app, and have them basically apply to Home Assistant as well.