I also have a LG smart TV. Although on my network I get about 9mbps, on the TV I get less than 1, and the BBC iPlayer on wi fi stutters to the point of not enjoying it. I actually phoned LG who more or less admitted a problem with wireless. I also have a iPad and a laptop with an HDMI lead connection so now I use one of them to watch catch up on the TV from any of the other catch up services.
Amazon Fire HD 8 review: A brilliant combination of function and value – with one massive caveat