Hi, I bought a Deco M5 system about a monthy ago and until today it's been great.  We have 3 Deco units and coverage over the house is generally strong.  This morning, speed of the wifi has been poor.

I've done the following:

1) Run a speedtest from the Deco app - 27Mbps down, 5Mbps up

2) Run a speedtest from several connected devices - 1-2Mbps down, 0.2 - 0.5Mbps up

3) Hardwired direct into my broadband router - 27Mbps down, 5Mbps up

4) Shutdown my broadband router and all of the Deco units

5) Restarted the broadband router

6) When the router was back up I restarted the main Deco

7) When the main deco was back up with a gree light, I restarted the two slave deco's

8) Repeated the speed tests above with the same results

So there seems to be an issue with the Decos and not my broadband.  The wifi is turned off on my broadband router and has been since I installed the Deco system.  I've checked firmware is all up to date and I've run the speedtest on 2 different phones and two different laptops.  The wifi is consistently slow.

Any ideas?

Thanks.