Router connection issue

[#1]

Hi,

We've been having intermittent issues with connectivity from the beginning of our Fibre Extra service which started in August. We've got Plusnet Hub One router. Seems to happen when streaming iplayer etc. and happens both with our windows 10 laptop and android smartphones. 

We've checked connections, router is right by the socket, no other equipment anywhere near etc. so we're at a bit of a loss now. 

Husband did the troubleshooting diagnostic and got message on the attached screenshot. Any ideas what the issue could be? 

Thanks for help

[#2]

Used to have similar issues. Got rid of the plusnet router in favour of OR modem and asus router.
No problems since.

[#3]

Hi there.

Are your devices connected to the router wirelessly?

As the connection coming into the router seems to be stable: