Z-wave devices firing erratically and responding inconstantly

[Dori_Arazi]

My z-wave light switches are firing randomly and will inconstantly respond to commands from the hub.
I am currently only running the “homeseer : WD200+ Dimmer” device handler.
Can WD200+ Dimmer handler control multiple devices?

My z-wave network contains:
x1 ZWP smart dimmer
x9 Homeseer DW200+ dimmer
x8 Homeseer non dimming switches
x6 companion switches

Devices are in close enough proximity to each other to create a clean network.

The first day I installed and configured the network things ran smoothly. It seems things started going sideways when I started playing with Alexa Stringafy. But it might be a coincidence.

Any ideas on what might be going on?

[jkp (on vacation until Oct 15, 2020)]

Try running z-wave repair

How do I make sure my Z-Wave devices are routing optimally in the SmartThings...

[Dori_Arazi]

Thanks for the suggestion @jkp. Running the repair didn’t help.

My hub is in a media closet along side a rather powerful wireless router. Could this be interfering with the signal?
The other side of the cabinet wall has 2 smart dimmers, I figured that would be a strong enough entry point into the network.