Hi, I just installed the Deco and manually connected all my smart switches to the deco.  they sometimes work fine but the majority of the time there is a huge delay.  I'm talking like 3min delay.  it's been over the course of a week.  Internet connection is fine, it's just the smart switches.  the switches are Leviton Decora Smart dimmers and switches and fan controller.  They all have delays.  Worked perfectly on my old router.