I already have taken actions in trying to fix this:
1) Disable all firewalls
2) Open port 5738-5739
3) Speedtest: http://www.konami.jp/we/network/2009/uk/pc/speedtest.html
4) Network inspection tool: http://www.konami.jp/we/network/2009/uk/pc/tool.html
I have done all these steps, none of...