Hi Obiwan_65,
Thank you for reaching out to us in our community and welcome, sorry to see your connection speed has been a bit up and down, as rightly advised WiFi can vary on each device and can depend on a lot of things, we do recommend Sam Knows Real Speed, this does show exactly what speed is hitting the Router.
The speeds that you get at home will, of course, depend on a variety of factors; it can depend on your package, what devices you have and how many, how those devices are connected, and many other things, we have a download speed guarantee, and this will show the minimum speed that we would expect for all our packages. You can take a look at that here, have you already discussed an upgrade, when is this taking place?
Regards
Paul.