He is not saying you will get 20% for wifi---I have same true home internet--when true techs come to test or set up, they connect their laptop to router with a LAN line--the advertised speeds are for wired connections,not wifi--variables if using a various VPS, or how many devices in a home on utilizing wifi at the same time--I usually get 650 to 750, or even 800 on rare occasions on my my True Wifi (i have the 1000 download) and sometimes as low as 500 to 600, which is plenty to watch movies, etc--True fiber has local what they call "nodes" i think ==and when i signed up there was a mix of 8 homes allowed per node--when i first signed up, they told me there were only 2 other on my nearest node--but over the last two years, it has filled up and if all users are on at the same time, it is possible that the "peak usage" they mentioned is correct--if also, within the household, they are multiple devices utilizing the wifi at the same time--it was suggested you connect a LAN line to a notebook, for example, and then run a speed test--within Thailand--ping bkk, and then ping an outside Thailand site and compare speeds--as that is how a True tech would test it--then if those speeds are good, then you know it is internal wifi issue, not ur fiber connection.