I live in Somerset West and Afrihost is my ISP. I have a bundled 10Mbps line and 50+50Gb CAP, unshaped account. I used to get 8.5Mbps 24/7 on my line until Feb 2014. The closer it gets to the end of the month the slower the speed becomes between 6-9pm. Afrihost insists it is my line that is the problem. I have sent them a ping plot showing the packet loss being experienced on almost all of their MTN business servers. MTN are probably using the same backbone as they use for cell phone traffic. The Heldrberg area is out on a limb from Cape Town with many cell phone towers along the way. Many people use the time in traffic on the N2 to make business phone calls. It is my theory that this is the problem. A few years ago I used CellC as my ISP and this is the explanantion they gave me for the problem. They have 5 cell phone towers in a row connected together with microwave before the signal reaches fibre. I was connecting to the last cell phone tower so I had to compete with the traffic from all 5 of these cell phone towers. It is very likely that MTN have the same issues. As the Helderberg is a popular retirement place, the demand for fast internet is small and so it doesn't pay to put fibre in all the way along the N2 to get to the relatively few customers. You may remember them digging trenches for fibre all the way along the N2, but they only put in difference coloured pipes for the fibre. They blow in the fibre at a later stage. It would be interesting to know if MTN have a fibre connection to the Helderberg. It certainly seems so because the pings to Cape Town are really fast. The problem is packet loss which Afrihost cannot explain. I don't know why ISPs don't share what their network looks like and what the traffic is. That way we can see if the network is heavily loaded and may then decide to use the internet later. This would help them too.
http://needforspeedsomersetwest.yolasite.com/