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Forum Discussion

jasonyang's avatar
jasonyang
Aspirant
May 30, 2017
Solved

R6700 losing internet speed

When my Internet speed used to be 25Mbps, the download speed I get from R6700 router (wired & wireless) was average 28Mbps. Last week my ISP doubled my Internet speed to 55Mbps but I can only get avg...
slow speed
Troubleshooting
  • FURRYe38's avatar
    FURRYe38
    May 31, 2017

    Disable QoS on the NG router while speed testing. 

jasonyang's avatar
jasonyang
Aspirant
May 30, 2017

The modem is Motorola SB6121 and has no built-in router  I connected my TP-link router (450M) to the modem and my test speed increased to ISP's advertised speed. I don't think it's the modem's problem.

FURRYe38's avatar
FURRYe38
Guru - Experienced User
May 31, 2017

Disable QoS on the NG router while speed testing. 

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    May 31, 2017

    Make sure QoS is configured correctly for your ISP speeds as well. Looks like disabling it for speed testing works too. Enjoy.