I have a Cell C connection (Sonneglans, Randburg) via Vumatel. I stream a lot of sport via Sky or BT Sport, the latter seemingly the better service thanks to a better media player. That said, the Sky image/s (Formula One) comes and goes from clear to blurry. Is the speed on the fibre line intermittent, or is it the player? When I test speed (broadband test or speedtest.net) it consistently shows 20/20 up and down which is the service I pay for. Is there an app I can download to test the speeds on a frequent basis that does not require a manual activation etc. Thanks in advance