The neg rep is a little harsh, but not everyone is a pro, tgun. I'm with optus too, and to be fair, it hasn't bothered me terribly until recently when I've been playing against masters level opponents, and the delay really hurts when I actually have to split against banes or dodge storms, or I lose.
For the purposes of 'ISP which is good for SC2 specifically' though, yes, Optus is probably the worst for that use. Doesn't mean everyone will find it terrible.
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