Could you please confirm that it's also same with Full VPN mode enabled?

Hey there, just tried it now and can confirm the same error appears, also tried to lower MTU and no effect.

I can't explain at this moment why.  Did you try to change Connection Protocols to TCP based and test it again?

Yep i tried that early on, kind of run out of ideas now. Currently using exitlag without issues but i know others use this ok with blade and soul. Pls let me know if you have any other ideas.

Did you try to use other mudfish nodes and all same?

Hey, as i'm in New Zealand i only have one node available. Any other options? I could expand this to AU nodes i guess but this would increase latency i imagine.

Yes the mudfish nodes which are closer to your location is only one.  But please consider to use the mudfish nodes which are closer to the game server location.  :-)  I think there's some mudfish nodes you can try.