Me and my dad have it working pretty reliably on our ps4 and ps4pro. Here's how we did it Both are connected using a cable via a network switch to a fibre modem with Upnp enabled and Nat accleration disabled. What the switch does is it does all the necessary port forwarding automatically and reliably. Second we renamed one of the ps4s (setting is found in the system settings on ps4) because all ps4s from our experience have the same factory issue name (ps4-944) which can screw up your modem. Finally if we have any connection issues (which still happens occasionally) then we can solve it simply by doing a network test (in ps4 network settings) and then re launching destiny immediately. This has worked reliably for 3 days for us and allowed us to do raid reliably. Hope this helps other ps4 users and could be adapted to xbox maybe idk. Glhf guardins :)