I looked at your screenshots of devices. Very chatty devices most often power reporting or multi-sensors have been known to jam up the zwave on the C7. If you have any devices that report power metering, adjust the reporting intervals higher if you can tolerate it, or disable if you are not using it. Same with multi-sensors, adjust the reporting so there are not excessive reporting coming back.
Also, I see you have a bunch of AEON Labs sensors. Do you have them plugged in or on batteries? I do not have any myself but I think that is the brand I have seen people reporting certain models when paired on mains power (plugged in) they will act as repeaters and do not in fact work very well as repeaters.
This app helps to see the routing in a more logical way, you can filter by the repeater to see a list of devices that are all using the same device as a repeater. Link to App: [BETA] A Z-Wave Mesh Tool [C7 and 2.2.4+ Only]
