Tp Link RE330 Extender very slow on 2.4, 5ghz and ethernet

Tp Link RE330 Extender very slow on 2.4, 5ghz and ethernet

Tp Link RE330 Extender very slow on 2.4, 5ghz and ethernet
Tp Link RE330 Extender very slow on 2.4, 5ghz and ethernet
5 hours ago
Model: RE330  
Hardware Version:
Firmware Version:

I have a 500 mbps router and when i use the extender om 2.4 or 5ghz i am only getting 30-90 mbps and on ethernet i am getting 30-80 mbps. How can i fix this because this is very slow compared to the router speed. 

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