R500 internet speed slower than ISP provided.

[joshua_sin]

I setup 2 R500 as a mesh network and using 1Gb boradband network. I find that the connection speed dropped to around 400Mb for Cat6 cable connection and 200Mb for Wifi 5G connection (80 Hz) when I connected internet via R500. I tried to connect my notebook to ISP modem directly and got >900 Mb speed. 
What could I do to improve the performance?

[syamantakomer]

Happy to help! 🙂

Regards,
Syamantak Omer