I am getting almost 100mbps speed with my Airtel broadband connection but after connecting it with TP Link extender the speed gets reduced to approx 16MBPS.

Can anyone please help with this?

I have tried using the different names for rouer and extender and rebooted the extender many times but no luck.

Please find the screenshot below for Extender details, connection name and  speed details.

Genuine reponse for the help please..