The servers in Oceania are either shut down or connected by dialup. Hosting a custom game with dedicated servers turned off (p2p) does a better job than the official servers are, thats with players in Sydney, Perth and NZ in the same game. Everyone will be sub 80 ping. Play with the dedicated servers on, 5 players in the same city will get a ping higher than 150, most 200+.
So, when joining a public game, is there any setting or method to force the game to play on a p2p connection?