@David-TP 

Hi David thank you very much for your reply and help

I have changed the RJ11 cable on a couple of occasions now but no change with that

I have used the Deco app and selected the Update Deco but it returns ‘Your Deco Home Wi-Fi System is currently up-to-date. Enjoy’

However, it shows the current firmware Version to be, 1.0.9 Build 20230720 Rel. 51373 which does not match the version you have referenced. Is there a way to manually update the firmware in anyway?

I can replicate the issue by way of plugging the Plusnet Hub 2 to the DSL socket and running a speed test then removing the Plusnet router and installing the Deco router and running a speed test which shows the very low bandwidth.

I have now set up the Plusnet router as a bridge and used the Deco X73 in Router Mode, this works fine but not ideal as now I have 2 devices connected simultaneously and that is one of the reasons I purchased the Deco, to directly replace the service providers modem/router and implement a Mesh WiFi network

I will have a look on the internet to see if there is a new Deco firmware file and see if this can be manually applied to my Deco

Thanks Again

Ray

I have now upgraded the firmware manually

i will try and swap things back tomorrow (from router only mode) and see if this improves things

Thanks

RAy