I have 2 xbox's connected through hardwire to my r6400v2 they have issues playing the same game together at the same time. My router is on its most recent firmware update, I did a factory reset earlier tonight. I am trying to avoid doing manual port forwarding because I have a rudimentary understanding of what I am doing and do not want to expose my network to any sort of security issues. I havew UPNP turned on but nothing ever populates in the portmap table.
I ended up using static IPs and port forwarding 3074 and one of the alternates. That seems to have done the trick. I think the actual issue is the firewall in the modem and my ISP has locked me out of adjusting the settings for that. Thank you for reaching out with that.
