@DoubleMaverick Here's a simple example of 2.4 GHz settings: It's quite possible that the 2.4 GHz band around you is highly congested. You can check that by installing an app like Wi-Fi Analyzer on...

@Raksha Do you use any special features like DHCP address reservation, access control or IP MAC Binding on the router ? If you do, disable them and test again. It's possible that your android devices...

@zyniac Keep in mind that if your phone MAC addresses are randomized that will happen again. You can read more on that here -...

@zyniac Ignore "Sharing Network" , that's FW dependent. Try setting Channel to Auto, disable airtime fairness feature and enable MU-MIMO feature. Then test again. Do you use any special feature like...

@Maxuk There is no specific setting for this. Have you tried to change the DHCP server Primary and Secondary DNS like this: A user resolved this issue changing the default DNS to Google's DNS....

@zyniac Try these wireless settings: Then reboot the router so the wireless devices can re-connect and test if that will resolve the issue.