We have 4 Deco X50's (hardware version 1.20).

They are setup in Access Point Mode, and all are connected with ethernet cables going to the ISP modem/router (which has it's wifi disabled as you should).

We have trouble visiting certain websites or using certain apps using wifi. (Teams, the Lidl app, a Belgian payment card app, ...)

Some work correctly, some load very slow, and some don't load at all. If we switch the phone from wifi to mobile network, everything starts loading.

Doing a speed test on the wifi-network, the speed is 950 Mbps, so it's not the internet speed.

Using the wired network there are no problems, even connecting through a port on the deco's.

Only the wifi seems to be affected.

Is this a known issue? There don't seem to be any new firmware updates for this hardware version, unlike the other X50 hardware versions.