But that’s the thing, if I play on Australian severs I get about 400 ping. If I create my own server on Australian servers with a king limit lower then 300, I get kicked from my own server.
If it's only you then problem obviously is on your side. Maybe talk with your ISP.
And what intranet connection you have? You sure that nobody else is using internet while you are playing?
If someone is downloading something, or watching movies online, then it can affect your ping (but it depends from internet speeds up/down).