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l1955c's avatar
l1955c
Aspirant
Apr 17, 2022
Solved

Netgear model C6250 the 2.4 ghz is extremely slow (5.0 ghz is ok)

Hello Group,

This router is less than a year old, running comcast firmware v1.02.02.

This morning the 2.4 gHz network speed has dropped real slow, most of the speed tests fail to upload at all.

Last speed test was .03 download and 4.56 upload, ping 11 ms.

I've unplugged it for 5 minutes and reconnected with no improvement.

I can log into the router, changed the password.

Tried changing the channel from automatic to channel 5 (no better)

The problem is that I have several security devices and thermostat that only work at 2.4 gHz.

 

Again the 5 gHz is working fine.

 

Thanks for suggestions.

  • So it works fine on everything but the app version on the iphone. 

    Kind of points to that app. Maybe its connecting to a bad server when hosted in the app. 

7 Replies

  • plemans's avatar
    plemans
    Guru - Experienced User

    try channels 1, 6, 11. 

    See if any of those work. 

    Also, make sure 20/40hz coexistence is enabled. 

    • l1955c's avatar
      l1955c
      Aspirant

      Hi plemans,

       

      I tried channel 1, did not help.

      I tried channel 6, did show a minor improvement. 1.5 Mbps down and 11.5 Mbps up.

      I tried channel 11, did not help.

      I've attached a look at the channels in use near me.

       

      Where do I find the check box for the 20/40hz coexistence is enabled?

      The interface I have is the NETGEAR genie C6250-100NAS.

      • plemans's avatar
        plemans
        Guru - Experienced User

        What device are you testing on? 

        What app are you testing with? 

        Have you tried other devices?