[URGENT] Why can't I play mhfu over lan

[Erihs]

Hi there, I have two computers with ppsspp, one on ubuntu, the other on windows 10.
When we launch a quest on mhfu, we can see both of us for something like idk, 5 seconds, and then, on each other screen we see "xxxxxxx broke off from the group"
Within the 5 secondes, we can see each other move and fight, and then nothing else.
Help us please, i'm trying to learn to my little brother the art of hunting!

[Erihs]

Can I have an Answer fast please? I'm doing a big lan event next week

[tywald]

Can I have an Answer fast please? I'm doing a big lan event next week

Make sure the following are disabled for everyone:
Fast memory(Unstable) - System
Timer hack - Graphics

Other that make sure PPSSPP is allowed in your firewall(s) for both public & private networks. On Windows 10, the first time you connect the firewall popup comes up right? Most people instantly press "allow access" without checking both boxes first. It's important that it is allowed - or simply disable firewall altogether.