@Stella.Q I'm getting same issues one select 2.4ghz other 5ghz but much slower than laptop. Both 3 and 6 meters away and plasterboard wall between each.... 6 meter has 2 ... Don't have issues with...

Im getting same issues lower speed high latency. Vodafone router th3000 and i can select the wifi speed. On pc selects 5ghz other 2 4ghz 2.4ghz latency is less 5ghz one .. o is 3 meters away and...