UPNP just makes it moderate which isnt good enough if you have friends who have strict NAT types so annoying that they can't even join your party if you want it completely opened for xbox live then you do this.
MTU set to 1365
UPNP off
Port forward 53~3074 for both TCP/UDP
DNS1 and DNS2 you can find it in your router addressstatus write it down and manually put it in your xbox settings
Idid this and my nat is finally open
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