Welcome to the world of cable internet. Cable companies over sell their lines and ifrastructure. When I worked in retail we sold cable internet (I will leave out the provider), they openly admited that they could not support everyone during peek hours at full offered speeds and that if everyone had 100mb/s internet speed it would cause a real problem for their lines/infrastucture. We rarely sold 100mb/s connections anyway and were actually told to try "not" to sell them.
I have never had cable myself but many of my friends, family members do. Some things I hear: peek hours can cause slow internet, when all the kids get out of school guess what they do? Turn on the xbox 360 and start gaming. I do not know what it is about xbox 360s but they gobble up internet faster than netflix on full 1080p HD. I suppose it is because they are using upload and download, where netflix is mainly download. I have a friend that lives in a populated city, he has 100mb/s cable that is on a fiber line, even this line is bogged down during peek hours around 3pm to 7pm central time. At one point he told me he was getting 512kb/s down when he pays for 100mb/s. In this case I am not certain if it is the line that is maxed or the servers driving the line. I have had better luck with DSL as far as stable internet and speed goes. Downside: most of the time they do not offer internet quite as fast as cable can offer. Upload for aDSL usually sucks. Cable is not much better though.
If I had a choice only between satelite and cable, I would chose cable hands down. If there is a half way decent DSL provider option around 12mb/s I would take that over 30mb/s cable.
Edited by zingo156, 11 April 2014 - 03:24 PM.