Why does another router give less speed over WiFi?

Question

Computer networks

Hello. I recently purchased a TP-Link AX3000 router with support for a 5G network and WiFi 6. Everything would be fine, but the Wi-Fi speed has dropped 6 times compared to the old router. From 60 Mbps to 10 Mbps. And if you connect the router to a 2.4G network, then the speed is 0 Mbps. What can you advise to do to restore the speed?

Answer 1

To make - to buy normal routers. Tplink home has long been known to have problems with wifi.
Try updating the firmware first.
What does 0 speed mean at 2.4GHz? Disable all wifi versions except 2.4, select only N mode. Set the mode to 20-40Mg in the settings

Answer 2

Try to set the channel manually (i.e. instead of auto) - perhaps the problem is interference.
You can also reduce the MTU size from 1500 to, for example, 1420.