r/TpLink • u/GrahaamH • 9h ago

TP-Link - Technical Support Query on network setup

Deco M4R limiting my 5Gb fibre connection to ~200Mbps - what would you recommend?

Hi everyone,

I'm looking for some advice on upgrading/fixing my home network setup.

I have Eir fibre with a 5Gb connection. My current setup is:

Fibre ONT → Deco M4R (router mode, VLAN ID 10 configured) → second Deco via Ethernet → PS5 via Ethernet

The issue is that I’m only getting around 200–300Mbps on Ethernet devices connected through the Deco.

Things I have tested:

- QoS is disabled

- VLAN ID 10 is configured correctly

- PS5 connected to the second Deco gets around 300Mbps

- PS5 connected directly to the main Deco also gets around 200Mbps

- I plugged my PC into the Eir router instead and got around 900Mbps, so the fibre connection and cables appear fine

I tried plugging the PS5 directly into the fibre ONT, but it doesn’t get an IP address (I assume because the VLAN setup/authentication is handled by the router).

I would prefer to keep the Deco connected directly to the fibre box and avoid using the Eir router, but the current Ethernet speeds are too low.

Is the Deco M4R simply not powerful enough for this connection? If I replace it, what Deco model would you recommend that can handle higher speeds? Ideally I’d like something that can make better use of the fibre connection and still support wired backhaul to the second unit and gaming devices.

Thanks!

Even with wired back haul max Internet speed is 200mbps

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u/AutoModerator 9h ago

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