@Sokpan Yes, it will continue to work as your primary router for your home network but you'll introduce a double NAT in your network. Double NAT is not necessary a bad thing, but avoiding it is...

@Didier_M If you set C80 in AP mode (Case 1), you won't have routing problems anymore and you'll avoid the double NAT in your network as well.

@Abbas7 In higher end and new model wireless routers TP-Link removed Bandwidth Control in favor of QoS. Usually the lower end wireless routers still support Bandwidth Control (like TL-WR841N, Archer...

@ahl_ LAN -> WIFI should work because ethernet ports are bridged to the router's wireless network. It may be due to a networks settings of your devices - for example if you set static IP addresses on...

@Abbas7 AX1800 supports QoS only. You can't limit bandwidth of a particular wi-fi user.

@AI3 Keep the settings you've done - Bandwidth Control no negative effect on gaming. In your case you have improved the speedtest results which should have positive effect as a whole, including...