I have a RT-AC86U router.
I am using a FTTP 500 / 70 service. This gives me full speeds over Ethernet connection.
However, over WiFi, it only gives 160 / 70 connection (tried on Samsung phone, Pixel 6, iPad and Apple 12 phone as well). I have tried ISP router (Technicolor), Netgear RBR353 Orbi...