Two specific friends aren't able to connect with each other in games where a player hosts. With Smash, the game refuses to start if they are both in the arena. If either try to join a session in GTA, the other gets disconnected. In Monster Hunter World, the connecting one gets extreme lag. We're able to play games where there are separate servers like League of Legends but anything where its a player hosting doesn't work. Mutual friends are able to play with either friends but the second they try to play together, they get disconnections or lag.