Many ideas… but there are many parameters not shared by you. Please read around and if not successful, simply contact Athom, with generating diagnostic ID .
Some good start :
Hi Guys,
With the ZigBee improvements in Homey Firmware v5 and reading about all tips for building and fixing a good ZigBee mesh network I wanted to know how big ZigBee Meshes grow on Homey and how Happy the Homey users are with it.
To collect all Data I ask you to run a HomeyScript on your Homey V5 and report back some results here.
The script is placed on my Github as it is to large for here.
For copying the script to HomeyScript you can better open it RAW here!
How to run the script:
I…
https://support.athom.com/hc/en-us/articles/360019238179-Updating-from-4-2-to-5-0