@Kevin_Z Thank you! My brief assessment after a few hours of use of the new beta firmware... 1) The SpeedTest is as bad as it was previously (or perhaps even worse), but I'm sure this can be improved...

@Solla-topee Thought I would write earlier, as I think I've stumbled upon a solution to the problem. In September last year, when a new firmware was released, I set all of the bands on the AX11000 to...

@Solla-topee Thank you for your response. I'll follow your suggestion, i.e. set up a different network on the RE505X and change it to the router's SSID in a few days to see how things go. I'll report...

@Solla-topee Thank you for your response, much appreciated. When I add "EXT" to the range extender's 5GHz network, I can connect easily, no problem. But this is not what I want - I need the RE505X to...

First of all, the thread concerns the RE505X Range Extender, not an "Adapter", but I could not find the RE505X in the drop-down menu. So, I can successfully connect the RE505X to the Archer AX11000...

@Mikey_C Well then, there's not much I can say. Apart from testing another brand, all I could recommend is setting up a daily reboot, but I'm sure you've thought of that already ... I myself no...