i got very bad lag, RTO. i know ffxiv server got ddos but my friend can connect to game without any problem. i need to know where the problem is, My ISP? ddos?
No perfect answer for this question because it’s very vary depending on which ISP you’re using or how is the international cable condition good. 
Please check FAQ - Nodes document first and test with various combinations
As workaround you should use one of methods at Unsupported
Games. And
if you want to see it officially at Mudfish, please send me some game
packets using Packet Capture with
Mudfish
link while playing the game with Full VPN
mode.
Then, you can try FastConnect mode
Plus, note that about how FF traffic is going on
i forgot to clarify that my friend is also using same ISP as mine. My friend has no problem connecting to game with and without vpn has low ping.
Did you use same mudfish node which your friend used?
we use same node, but nevermind, i think the problem is on my side.
No problem I hope now everything goes well with mudfish. Please let me know if there are any other problems.