Scene Activation has a delay

[kalmard 0]

I've spent today debugging my z-wave network and various issues with slowness and unresponsiveness. I managed to solve almost everything except one issue.

 

I have about 5 dimmer 2's installed in various locations. Scene activation is enabled on all of them. When I press a button with scene activation on, there is a very obvious delay between the button press and the first commands appearing on the z-wave network (by looking at the openzwave logs). There is no other traffic on the z-wave network, RTT values are good (<50 ms in most cases). The network hub is a raspberry pi with an Aeotec Stick Gen 5. The network is secured z-wave plus. Other network communication (for example programmatically turning on the fibaro switches) don't have delays.

 

This is very annoying as it effectively causes some of my light switches to have a ~1s delay turning on lights, which is emberassing, confusing and just a ridiculous situation for a technology that is supposed to be designed to solve these exact issues. The same issue occurs if I use association groups, so that is not a solution.

 

So my questions are:

• what could be wrong here (ie. is this a known issue with the fibaro dimmers, or is there anything else that could cause this)
• has anyone encountered this or am I alone
• what can I do to fix this

 

Thanks!