My "NAT Type" is moderate for Call of Duty, both my roommate and I have a PS4 Pro.
Ah, well I did manage to get it to respond to queries for my local network...but they were lost upon reboot :( I guess I'll just setup an internal DNS server in my Web Server VM.
Asus really dropped the ball on...
I just looked and disabled it, and it does offer the option to enter the IPs for primary and secondary DNS servers, but no place to enter A/CNAME records.