They did not tell you to disable NATI've just heard back from Asus Tech Support regarding my crap download/upload wired speeds on 10Gbps broadband and this was what they said verbatim:
'Dear Valued Customer,
If you recently encounter limited speed acceleration, or unable to reach maximum connection speed, please try to disable the following features: AiProtection, Traffic Analyzer, Web History, Adaptive QoS, Game boost, Web & apps filters, bandwidth monitor, Mobile Game Mode to maintain the optimal internet speed.
Sincerely,
ASUS Team'
Seems to tally with what RMerlin said of it being a NAT/CPU limitation throttling my wired speeds.