I have a 3-bed house, half of which is basement, so Wi-Fi is an issue. I'm using Google Home smart devices (2.4Ghz). I have a mesh comprising 3 x Deco S7s and 3 x E4R's. I have a Virgin Hub 3 upstairs

Ookla shows at least 350mbps when I connect direct to the router but I'm only getting 70mbps or so from my PC (according to Ookla, The figures from the app seem to be a total work of fiction 1.9mbps/4