Hey. I got my new gateway today from AT&T Fiber and tried IP Passthrough again. Same situation happened, would have OPEN NAT on my Xbox for around 10 minutes, and then would go back to a STRICT NAT and Double NAT. Also after that 10 minutes, my WiFi would become extremely slow.
I am running my WiFi currently off of Access Point mode, but would highly prefer Open NAT instead of Moderate NAT, and just having more freedom to customize my WiFi within the Deco app.
Thanks.