Dear TP-Link Team.

I have faced packet drop or ping loss every now and then while using Archer C6  C6 V2.0 EU, (1.3.6 Build 20200902 rel.65591(4555), I bought the router few days back so it is new, router will drop packet or pings(pings will timeout) at random intervals with no reason.

2nd Screen Shot after may 1 or 2 minutes.

 3rd Screen Short Same interval of 1 or sminutes or so.

let me first explain the connection setup:
FTTH internet coming to Huawei Router(HG8245Q2) with 240Mb. I connected Archer with this router via wifi and lan as mentioned below to see the behaviour and try to find a workarround of the problem described above. Below is detail of my troubleshooting. 

Method 1 I used:

 a) using WDS feature on 5G wifi radio of Archer C6 to connect with Huawei router.

b)Connection is successful but ping packets to Huawei router IP address(Local IP address of 192.168.100.1) would time out frequently on both wireless clients and lan connection cleints no matter where you connect with archer and trying to reach HUAWEI router.

c)VOIP services or VPN service to work from home does not work because of this frequent packet drops by Archer C6. This packet drop causes VPN to disconnect again and again services like CISCO WebEX or ZOOM would fail and no meeting can be joined. Even if you join it will be disconnected ot voice would start breaking.

d)Changed firmware to all available firmware on this link one by one  but in vain there was no difference in packst loss:

https://www.tp-link.com/uk/support/download/archer-c6/v2/#Firmware

Method 2 i used:

a) Using Wan port of Archer C6 and connecting it VIA healthy and perfectly working CAT6 cable with Huawei router.

b) Still observing packet loss and ping drops on both wireless and lan connected client,  no matter where you connect with archer.

d) tried different version available on above mentioned link

e) No method Worked.

Method 3 i used:

a) Connecting healthy and perfectly working CAT6 cable to Archer C6 lan ports and Huawei router.

b) disabling DHCP giving IP same as of HUAWEI router subnet etc.

d) connection successful but again packet loss or ping drops frequently on lan and WIFI 2.4G or 5g clients.

e) tried all different firmware as above no differnce problem is repeated.

Method 4 i used:

a) installing openwrt openwrt-19.07.4 on Archer C6.

b) after successful installation connected using relayed feature in openwrt to connect Huawei router via 5G wifi.

c) Connection successful and no packet drops on wireless clients on 2.4G or 5G and lan.

d) after may b 30 minutes or 45 minutes connection would drop and i had to reboot the archer or simpy resatrt the 5 g radio.

e) tested on LAN and found it works but i haven't tested it long enough for stability purpose as i dont like to use openwrt.

f) Also i found that 2.4g speed on openwrt would drop to 10Mbps or so on download and 5 or 6Mb on upload so did not liked it at all.

Method 5 i used:

a) I used TFTP recovery method and installed a firmware released by TP link in 2018 version 1.0.1 Build 20180627 rel.42764

b) Used WDS on 5G again to test it first to connect to Huawei Router. connection was successfull

b) Packet Drop issue resolved. but another issue poped up, 2.4G WIFI speed dropped to around 10-15Mb, even after forcing channel to 40MHZ. note there was no any noise in the channel causing such a behaviour.

d) Used LAN cable setup to connect with HUAWEI router and archer lan port,  it was a success no packet drop, but still 2.4g WIFI was giving terible speed of around 10-15Mb.

Please note i also tried all other possible workaround on all above tested firmwares like disabling IPV6, disbling IGMP, disabling security disabling NAT etc. non of the workaround worked for packet drop or ping loss. Also for your kind information i always connected one or two clients during testing on either LAN or WiFi. so client is not an issue at all tried differnt Laptops(Wiindows based) and mobile phones(Android and IOS) for test clients. Also When clients are connected diectly to Huawei Router there was no any issue with regarding pinng loss or packet drop. So no issue at Huawei Router at All.

I noticed Archer C6 is droping packet when it report CPU usage more than 40, 50 percent. 

Dear TP Link team we need a proper workaround for this please share if you have already or else develop it please people are suffering because of probably bad software if not hardware.
Will be waiting for a proper solution.

Thanks.