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danheinz1126's avatar
danheinz1126
Aspirant
Oct 24, 2021
Solved

R6400v2 creating bottleneck

just had comcast out and we were trying to troubleshoot my connection. I pay for 1200 down and suddenly I was only getting 200. I had did some troubleshooting factory reset of router and restarting modem etc. I assumed it was in the signal and so did Comcast. We ended up replacing some connectors and cabling etc. Then we were still getting the same speeds. We ended up bypassing the router and plugging straight in to the modem. Boom 900+ down. I did a factory reset on the router again in an effort to correct the issue, but the problem is persisting. I previously was getting 900+ with the same setup.

 

Router firmware is V1.0.4.120_10.0.91

Cable Modem is Motorola MB 8611

 

This is over a wired connection, however the wifi is only at about 50% of what I normally get as well

11 Replies

  • Yeah I have the same service with Xfinity and the same issue with the 6400v2 downgraded the firmware which helped get more speed but ultimately bought a new router the Rax50 to keep up with the speeds much happier now.
    • danheinz1126's avatar
      danheinz1126
      Aspirant
      Have you seen why? Everything I saw showed it should be supports and it did work for awhile.
  • have you tried enabling ipv6?

    What website are you using for testing? 

    Make sure qos, access control, traffic monitoring, and parental controls are all disabled. Then reboot the device and test. 

    • danheinz1126's avatar
      danheinz1126
      Aspirant
      Ipv6 was disabled I set it to Auto detect and it chose DHCP. Everything under qos is disabled except for WMM tab. All other settings are disabled
      • plemans's avatar
        plemans
        Guru
        Did it help?
        Did you try a factory reset and new install? (don't use a backup)