I was with IINet on a 100/40 plan and regularly got 3/.8 during congested periods. I am 150 metres from the node. After IINet told lies and said they had fixed the congestion problem, the crap speeds continued. I got the TIO involved and got out of my contract, now with Aussie Broadband who will not add more people than their bandwidth allows, and in peak periods, still get 70Mbps. Also you don't have to wait hours to talk to some clown in Manila or similar. All the Aussie people are in Australia and employ Australians who have a command of the Queens English. Best move I ever made, having said all that I am still having humongous dropouts, not the ISP fault but NBN. So far since connected in excess of 400 dropouts, 8 visits by NBN techs who know jacksh1t. The last guy this week rocked up, said he was going to the pillar up the street. I checked 10mins later, no sign of him having ever been there, and he signed off on the job at the time checked on him saying no fault found. What a bunch of morons. BTW from what I can see 99% of their techs originate from the sub-continent..who have what I believe to be absolute minimal training in both technical expertise and the English language. It is no wonder NBN Co have a crap name.

Oh yeah as I type this I am waiting for yet another "tech" after Aussie gave NBN a serve for such a lame excuse to sign off on the fault. The mind boggles!!
In the last 24 hours my connection had dropped out 8 times, need I say more......
I can see where the problem lies, but stuffed if they can, my SNR margin varies between 2dB and 6550dB on my upstream where the downstream is absolutely stable at 13dB
My attainable downstream is constant at 117Mbps and upstream varies between 22Mbps and 55Mbps with actual downstream constant at 109Mbps and upstream variation between 16Mbps and 44Mbps. Go figure!!