This method is great for my connection. Manage to stay green almost all the time. Less lag spike too.

I wonder is there any workaround for Mac OSX? Try to google but cant find any solution to add "-launch OnlineService.Matchmaking.ServerPool=AU1"

UPDATE:
Nevermind I found it: http://us.battle.net/d3/en/forum/topic/12372787193?page=2

Guide on Mac:
Open Terminal: Applications -> Utilites -> Terminal
then copy the BOLD text & paste one of them in the Terminal Application, then press return

To Connect to AU servers
/Applications/Diablo\ III/Diablo\ III.app/Contents/MacOS/Diablo\ III -launch OnlineService.Matchmaking.ServerPool=AU1

To connect to US Servers
/Applications/Diablo\ III/Diablo\ III.app/Contents/MacOS/Diablo\ III -launch OnlineService.Matchmaking.ServerPool=Default



This post has been edited by mikelanding: Apr 13 2014, 02:16 PM

1) Most of us here playing at America server. NOT Asia or EU server. US or EU server normally bad ping time for us
2) No. You can only use your character that create on that particular server. If created at Asia server, only use at Asia server.

This method worked on Window Client. But not Mac OSX client.