So I have had my Deco P9 installed for about a week.

I have them running in AP mode as the router is handling the routing (Virginmedia Superhub 3)

Network is as follows

ISP---ISPRouter--P9DECO(Master) - - Wifi to other two P9DECO

I have reserved an IP address for each deco in DHCP.

DHCP leases are set to 7 days.

I have the latest firmware from TP-LInk at the time of writing this post.

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Problem

Every 24 hours or so the master DECO simply loses internet connection. The internet connection is fine as my PC is connected directly to the router.

When I ping the Master P9 Deco from my PC which is connected to the same router I get no response. The Ping drops completely 100% packet loss.

I have changed the ethernet cable twice to make sure it is not a cable issue.

I have changed the port it is connected to on the router.

Only when I power cycle the Master DECO P9 does it respond to PINGS from my PC and is then able to access the internet.

There is clearly something fundamentally wrong for a brand new product to be unable to remain active for more than 24hours.

I have even factory reset all of the Deco P9 APs. STILL this problem persists.