Double NAT – Help Requested

I’ve been battling the dreaded 'Double NAT' on my Sequence X for so long as I can keep in mind and have gone by means of numerous strategies seen on-line in an try to get to an Open NAT. My present set-up is included beneath. I went by means of the method of creating the BGW320 a passthrough by following this information. I’ve my most important Deco S4 mac tackle listed within the passthrough. I’ve disabled wi-fi on the BGW320 as effectively and turned off all firewall settings. I’ve opened all of the ports for xbox by means of the BGW320 in addition to the DecoS4 that I’ve present in related threads. I’m at a loss for what else I can do to clear this subject. Any help is appreciated.

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