Hello, Thanks for your reply. I tried different routers and cables, and ended up with 3 interlinked Linksys nodes in my small house, so the issue wasn't the wifi, ( laptop. TV and phone all showed that wifi signal is strong).
I have tried plugging a cable into both the router and modem, and have had high readings- 50-100Mbps, but I also mostly get high readings on a laptop wifi speed test, 1- I shall have to have a cable ready so I can plug into the modem when I next have a buffering issue, and 2- As the speed tests mostly say I can have 50-100Mbps why does it look like I've never used more than 5Mbps, with the devices I run my basline usage should be above that- or so I have been told.