I have Verizon Fios with a Quantum Gateway Router (G-1100). I recently purchased the Deco M9 Plus because I was not getting good wifi coverage throughout the house. I need to keep my Fios Router in the mix because I use Fios TV.
I have tried setting up the Deco as an access point connected to my Fios router's LAN port. Using that setup my wifi is very unstable and periodically drops and the light on Deco turn solid red. If I set up the Deco as my primary router connected to my FIOS router's WAN port (so I can get TV) I lose certain FIOS TV services. I have tried so many configurations and I'm at a loss.
If anyone has any suggestions, I would greatly appreciate it. Thank you.