@MadhuReddy The EX220-G2u is targeted for ISPs. These devices have a customized FW and they are not supported by TP-Link, If you use the FW you mentioned, you'll probably receive an error message....

@BobZak You have a problem that has to be solved. Either way it's a cable issue (most probably) or a router WAN port issue. This kind of problem has been observed in many other router models and in...

@BobZak Your ISP modem has 8 LAN ports. Have you tried to connect AX12 to a different LAN port of the ISP modem and check if there's any difference ? There's a newer FW release for your device on its...

@Twinkle0091 Press and hold the reset button for more than 5 seconds to reset the router to its factory default settings. Use a toothpick or paperclip to push the reset button - you should feel/hear...

@guilletto As long as you achieve the speed advertised, it should be. I am using some of these like TL-SG105E/SG108E which sustain pretty much decent performance.

@guilletto TL-SG605E is an Easy Smart Managed switch which has a WebGUI as you already know. Glad to hear that Flow Control solved the issue you've had.