To do my tests, I excluded all my devices except 8.
These test devices are 2 switches McoHome 4 channels, each channel corresponds to children of the device.
VeraConcierge triggers a polling every 15 minutes on 16 devices, I find the 2 devices corresponding to the 2 switches (parent).
But there are 14 more devices that I excluded that correspond to other switches (McoHome, NeoCoolCam, Swiinter), sockets (Fibaro, NeoCoolCam), a muliprise (GreenWave), Fibaro modules and a Thermostat(Remotec ZXT120 control ).
The problem is that these polls block the Vera, and if you make a command at that time, the command does not run immediately, but with a delay that can be too long.
Which makes my home automation not functional.
To be certain that the harm came from VeraConcierge, I uninstall VeraConcierge and I let turn 24:00, I found that my home automation was perfectly functional.
I reinstalled VeraConcierge on my Windows 10 computer, I excluded all devices except the 8 above.
I see that VeraConcierge triggers polling every 15 minutes on the same 16 devices.
I left VeraConcierge on duty and I allow you to watch my configuration.