@Markirl That's pretty much the AP isolation algorithm of all TP-Link wireless devices - there's no AP isolation between bands, only within bands.

@MSEDS Check if you've configured any entries in Wireless Schedule and if you have just remove them and turn it off:

@User465346 Has that happened recently (after FW upgrade for ex.) or it's like that since you have the Archer C7 ? If the former then downgrade the FW version (if it allows you). If the latter then...

@brixi In the end - it's your choice. I've used many routers in AP mode - like WR741N, WR841N, Archer C6, Archer C64, Archer AX20. TBH I am satisfied with most of them with minor exceptions. You can...

@Varse QoS needs your maximum upload and download bandwidth (provided by your ISP) to know when it should kick in. That's the difference between Bandwidth Control (which you're asking for) and QoS....

@brixi The choice of the 2-nd router depends on your particular needs (Wi-Fi 5, Wi-Fi 6, etc.) You could use any wireless router which can be set to work in AP mode. If you don't need a wireless...