Re: Internet keeps cutting out every couple of minutes for about 30 seconds.
I think I've made some progress here. I found a property called 'Band' in the Network Controller in my Surface (see below) which was set to '2.4 GHz Only'. I changed it to 'Auto' and things have improved. I still get disconnections but they only last for a second so are largely unnoticeable. I didn't even know that routers have these two Bands.