Have you set up a static IP and port forwarding to the PS4?

If you have a computer (PC/Mac) you can do; - Download the latest firmware from https://www.tp-link.com/uk/support/download/deco-m5/#Firmware (or your local site if you're not in the UK) - Browse to...

@lemoncodes Yes, it doesn't look like there would be any issues with that network topology (I have similar with my M5s)

Dazza wrote Model : Hardware Version : Firmware Version : ISP : Hi all, I have been using the Deco M5's for a couple of months and haven't had a need to visit the App in a while on my Huawei P20 Pro...

I personally would go for Ubiquiti wifi access points in a commercial setting.

A power spike can kill modems quite easily. Have you got internet access to direct from the modem?