Complete crash when playing Mario Party 9 with netplay

[Maximusboy]

(10-07-2021, 01:18 PM)KHg8m3r Wrote: If it's not an OS thing, could be a network issue with something in your router? Are you the host or a participant? Are you using transversal server or direct?

I'm not an expert, but how could a network issue cause a segment fault?
I've been a participant for every game we have played.
We are using traversal server.