I was having some stream jank, and strange ping spikes so I took at look at pfSense where I noticed that my configured gateway (which is configured to check conn every 500ms) was seeing packet loss and ping spikes in the region 3-6 seconds for ~1 minute every 20 minutes.

I setup SmokePing to check the connection against other services to rule out the Vodafone gateway, they also experienced the same issues. ~60% packet loss and ping spikes every 20 minutes.

I contacted support, where they tred to help with my 'WiFi' issues. Eventually got escalated to second level technical support, where they ran line tests (which unsurprisingly came back fine as my line wasn't entirely dropping). This went back and forth for 2 weeks, eventually I caved and cancelled my contract incurring a £100 charge. Switching to Zen.

Signed up in May 2018, couldn't make it a year, ended up in a loop of them saying the issue was my hardware (the issue was also present on their provided router), with no end in sight.