@David-TP could you please advise?

@David-TP Hi! Thanks for the response, I use Samsung Galaxy A52. It shows 433Mb/s in the Wi-Fi settings tab. I ran the speed test again, I got 260Mb/s. For a cross check I also used Dell Precision...

Hi! My ISP offers 500 Mbps but no matter what I do I get around 250Mbps through 5Ghz Wi-Fi for my main Deco M4R. I removed QoS, Parental Control, and UPNP. My setup is ISP > Main Deco > Secondary...