@mandar.khamkar @ team, i am also facing the same issue. Hence was searching the solution here.

Initially i thought there is an issue with network or the internet service provider. I even changed the complete cable to my home, but then tested with a netgear router there was no issue.

I am back using C54 Archer and the issue shows intermetant drop of ping to gateway and google.com

  @atuldarne I am also facing the same issue. devices on 2.4 GHZ and 5 GHZ intermettent gets disconnected, while LAN devices does not have any issue.

I tested this with simultaneously ping command from all devices; Devices on 2.4 and 5 Ghz show PING Drop, but LAN devices doesnt show it.

Seems this is for all the Tp-Link Archer c54, which company is not able to justify or give a FIX or replacement of the device.

I have complained multiple times, but the workaround also is not working. 

I tested with a different company router (NetGear) it works fine, i dont know why issue is with this DEVICE.