So my internet speed dropped down to 100kbps from 4mbps, I went and did some speed tests, at http://speedtest.telecom.co.nz/ I continue to get the full 4mbps every time, on https://www.speedtest.net/ I get .1mbps everywhere I test, it seems the bandwidth is fast for the first couple of seconds then drops way down.

This is not my connection so am wondering if it is the dial up ? .1mbps seems much slower than dial up, youtube wont load on lowest settings. The modem page (Technicolor TG582n) doesn't show attenuation.