@SnipeViper OK then, try setting public DNSs on your modem's DHCP server like 1.1.1.1 and 8.8.4.4. and check if that makes any difference. Sometimes DNS can cause this behavior since TP-Link FW is...

@Areks Disable QoS. Change the Channel Width for the 5GHz-2 band to 160 Mhz and test: You may check this story for additional details on 160Mhz channel width setting.

@SnipeViper Make sure that you're using AX1500's WAN port to connect to your main router. A similar issue has been observed when you use a LAN port instead of WAN port to connect AX1500 to your main...

@HurbiesKaltok Here's an extensive guide on how to upgrade wireless router firmware and different upgrade scenarios. When choosing a new equipment you should consider your infrastructure, existing...

@cph22 These are unmanaged switches and there's no option to configure or monitor them - they are PnP. Most probably the problem you have is connected with physical issue between switch port and the...

@webipsum C7 v2 doesn't support native access point mode, however you can use it as an AP. Follow this guide (Case 2).