@Puneetag39 Try to use AP Mode and then check your speed.

@MarekDDC Update your Deco M4 to firmware 1.7.0 from the link below and then I hope your issue will resolve. https://www.tp-link.com/us/support/download/deco-m4/v2/#Firmware

@David-TP I did every single steps and also changed the DNS and MTU (1492) my ISP is using PPPoE and MTU is (1492) but my Deco is connected to ISP router via ethernet cable and getting dynamic ip...

Hey TP-LINK !! @David-TP @Marvin_S Since the day one when i installed firmware 1.7.0 on my Deco M4 my internet start working slow sometimes and websites could'nt load properly or load very slow and...

@MNLisa You have to do factory reset of your whole Deco system and do the setup again and make sure 2.4 GHz is ON

@MNLisa You have to enable 2.4 GHz WiFi to connect your IoT devices such as Smart Bulb, Smart Switches, LG Dryer etc on that band.