I'm on mweb and have no issues with netflix or crackle. I've got a uk Roku account so can't use hulu or history. But I get BBC and 4oF and they are also fine. The only issue I have is with NowTV, but I think it's an channel or server lead issue.
I also use UnoTelly, but it won't affect download speed.
Cybersmart reset my account and line and it's actually looking good tonight. Let's hope it lasts. Thanks AdrianH