@TP-Link_Deco 

Hi, thanks for the response!

The network is as follows:

Cable Modem --> Wired --> Main Deco --> wireless --> Bedroom Deco --> wireless --> Office --> wired --> PC

Distance from Main to Bedroom deco is less than 10m in a straight line, going through one floor and one wall. Bedroom deco to office deco is about 5m going through 2 walls. There is no other equipment inbetween the Decos that could create interference, just empty space and some light furniture.

I presume signal strength is the 3 bars of Wi-fi icon? both teh Bedroom and office are 2 green bars of signal. if i switch off the bedroom deco the office connects to the main deco and the signal is 1 orange bar and the download speeds drop to 12-13Mbps

I actually did a couple of further tests with my mobile phone on the wifi and i got the following results for download speeds connecting to the 3 decos in the house:

Main Deco : 286Mbps

Bedroom Deco: 130Mbps

Office Deco: 53Mbps (as high priority)

Office Deco: 43Mbps (as normal priority, QoS reset)

For comparison Office Deco PC Wired: 78Mbps (high priority)

I think this drop-off is quite drastic, I didn't expect the speeds to reduce so much just passing through the Decos as they are.

Other than moving the decos around or wiring them up together (which defeats the point of them, i might as well run cat 5 to my office) is there anyway to strengthen the connection between them?

Many thanks,

Willem.