Mellcor wrote:
...and on the aus server where i get about 50-90 ping...
It looks like you have ping fluctuations which is a killer in RWR. Try to ping 103.42.224.189 for a bit (the AU server and see if your ping is stable). I let it run for 30s here and I have between 345 and 350ms which makes me even able to play without much rubberbanding/sync issues as the ping is stable. Of course the high ping gives me a long delay but that's normal.
Long story short, ping fluctuation are the worst friend of the RWR netcode. Try to play via cable (not Wifi) if possible, that usually helps a bit at least.
Make sure noone in you home network is watching movies excessively while you are playing or use P2P tools like torrents.