Orbi 850 running V7.2.8.5_5.1.21 dhcp issues

Hi I recently switched my Orbi 850 back to router mode from AP mode as I have a new ISP.

What i've found within a day is that the dhcp function on the Orbi 850 (+1 satellite) running V7.2.8.5_5.1.21 is incredibly flaky.

We have about 80 devices at home, the majority of which are nanoleaf light bulbs (~40 or so), sonos devices and various other "smart" appliances.

I've rebooted it multiple times to try and get things working, and it works for some but then other devices cannot get connected. Symptoms I've seen are:

• Windows PCs getting the default microsoft IP address of 169.254, which means it could not get an IP address.
• Devices that were connected before the reboot won't connect after.
• Devices showing incorrect device "names" against the respective mac address in the device list.

Overall it seems to be incredibly unreliable.

Anyone else experienced this?