Thank you for your response. The latency was between the button and the hub. We use WiFi. I deleted the hub in the app and started over and the latency has disappeared. Working well now.
Thanks,

I have the hub set up with three flic light buttons. There is a 10 to 15 second latency from pressing each flic to to lights coming on. The flics are controlling WeMo switches. After several presses, the latency disappears until after some time of no use, then the delay comes back.