So far, restricting AX90 5GHz mode to 802.11a/n/ac mixed seems to have fixed the issue. However I bought this router because it is supposed to support the AX mode. @Kevin_Z , can you have a look at...

Out of curiosity, are your devices new? I am having issues with the Wi-Fi 6 (ax). I recently set the device to operate only on 802.11a/n/ac mixed. Older devices don't seem to have connectivity issues...

Similar issues being reported on the forum https://community.tp-link.com/en/home/forum/topic/581154 https://community.tp-link.com/en/home/forum/topic/268600...

@JonSkeet I did not understand the last phrase (alha e?) On AX90 you see all devices in the DHCP list, but they are missing in the network map, is that correct? If the missing devices are being...

@JonSkeet Are you running firmware 1.1.8? The missing devices have static IP's? Are they wireless or wired? Are they connected direct to the router, or behind a switch, access point, or other network...

@JonSkeet , DHCP is being handled by the AX90 or by other device in the network?