The download speed is not really the main issue that everyone thinks. To elaborate, its more to do with line stability. Line stability is measured by lots of different factors such as network response times, line jitter, local exchanges, routing paths to and from your device and router, from your router to your ISP’s network infrastructure, and then through the internet to the destination your requesting the data to be served from. This data is then packaged up, literally bit by bit and sent back to your device where the request originated. As long as the request remains open from your end this transmission and flow of data will continue. If your request is interrupted along the way, it may result in buffering, freezing, blocky picture or disconnects.