It doesn't have to be your actual bandwidth. The values could be (1) high quality/bandwidth, (2) low quality/bandwidth, (3) average. The browser can determine t

It doesn't have to be your actual bandwidth. The values could be (1) high quality/bandwidth, (2) low quality/bandwidth, (3) average. The browser can determine that automatically with an option to set it if you want to (e.g. for mobile connections). That should solve most problems without giving away too much information. But an extra button would probably just confuse people.