@SparkyBoy If you click on the blue router name in your post or go to the TP Link web site for that router, then click on the Specifications tab, you can see the streams under the WIFI section (8).

@JQuin If you are using Smart Connect, turn it off and set up two different SSIDs. That way you can control which devices are on each network. Show SSID, do not hide. If you are using a VPN, try...

@larry1210 Not that I know of.

@AbdurRafay Use only version 5, the one that matches the router. Otherwise you can brick the router.

@fasfas What Ethernet speeds are you getting? What mode is the router in? What is the Cat number of your Ethernet cables?

@Memo2727 The best way is to use a vlan which I do not think that router supports. You can try the parental controls.