Heya fellow Aussie player, I am also from NSW and mind you RO works like a raging arsehole on my end.
..............Nah she works fine!!! There is a lag issue but provided you are not using ADSL2 and below, you should be just fine. Mind you I dont have NBN so I have no idea how much faster it would be if you are lucky enough to live in an area that has it, and considering its a Julia Gillard thing, I dont even think its any faster.
Also, download leatrix like everyone suggested, I use it to destroy that bit of lag that I have left over, but be warned, you will never heal as fast as someone that lives closer to the server considering how far we live from it.