Monster Hunter Portable 3rd (HD Ver. or not)

[jobhand]

Hello everyone, I apologize if this question has been answered before but I can't seem to find an answer.

My 2 friends and I are trying to play Monster Hunter Portable 3rd online using Hamachi. We connect to the Guild Hall perfectly fine, but as soon as the mission loads the same person always drops.

As the host I'm able to play with either of my friends alone. But as soon as we try 3 players is when we run into that friend disconnecting. We've tried a bunch of solutions (turning fast memory off, changing hosts, opening up firewalls) but nothing seems to work.

We're using the most recent version of ppsspp 1.2.2.
As well as the same version of Monster Hunter.

Any suggestions are appreciated.