Hi. I have for some days now ASUS GT-AX11000 as my main router with 200 mpbs fiber connection. 5ghz is working good in both channels, but i have big issue with 2.4ghz. It gives to all devices only 3-30 mpbs even in phone connected next to the router. I have tried everything.... Reset, downgrade all versions of firmware, latest beta version, change channel, disable ax for 2.4ghz wifi, disable qos.... nothing solved the issue. Everything else works ok... just this problem with 2.4ghz wifi. Any suggestions please? I didn't wait to suffer of such issue with so expensive router!