HiI am getting very slow speeds through my router. I have R8300 router and a CM1000 modem, using it with Xfinity Comcast. This issue started out of nowhere and without any input from me. Comcast has sent a technician over and confirmed that I am getting 979mbps speed on my modem. I have confirmed this using my own tests. Direct connection to my laptop using an ethernet cable gives me a steady 900mbps+ speed. I have done the following troubleshooting steps so far.1. Reset the modem and the router.2. Reset the router using 30-30-30 reset.3. Power cycled both modem and router.4. Downloaded and applied the latest firmware for the router V1.0.2.158.5. Router is in an open space and I have tried testing speeds on 3 different devices within a foot of the router with same results.6. Dynamic QoS is turned off.7. Changed channels. There should be no signal disturbance from neighbors as my closest neighbor is a good half a mile away. The issue remains. I am pretty tech savvy and can usually figure out speed issues like this myself but this one has really stumped me. Please help.

Possibly. Power line spikes or surges can have a cumulative negative impact on the power adapters. If the adapter is not providing power within specification the device can function in a marginal manner. You seem to be thorough in your approach and since it is something you did not firmly rule out, and with the lack of progress with other items, it was an idea.

PrayJ wrote: Hi I am getting very slow speeds through my router. Measured how? Measured where? Connected how? Wifi? Wired? Direct connection to my laptop using an ethernet cable gives me a steady 900mbps+ speed. From laptop to what? Modem? Router?

What actual speeds are you getting wired into the router? When you reinstalled after the firmware update, you put you left qos off. did you also make sure to leave parental controls, access controls, and traffic monitoring off? If they were ever enabled, factory reset again and during the reinstall, leave those disabled. Did you reinstall from a backup? If so, don't.

Thanks for replying michaelkenward Measured: 1.Using ethernet cable connected directly to a laptop and a desktop. 2. Wirelessly with a cell phone, tablet and a laptop in close proximity to the router. Internet connection is through the modem (CM1000) to the router and from the router to the device using ethernet cable. I have changed the cables to rule out faulty equipment. This same setup was working perfectly fine for a number of years. 900mbps+ speeds through ethernet connection. 500mbps+ wirelessly. Now it is crawling at barely 2mbps. Ethernet connection to the laptop through the router is perfect - steady 900mbps. Thanks.

Thanks plemans There is no speed issues with a wire connection to the router - steady 900mbps speeds. QOS, Parental Control, Access Control, Traffic Monitoring were never turned ON or enabled before or after the reinstall.No reinstall from backup. This was a fresh reset to factory settings. The only things that are the same are the SSID ID and passwords. I did not change those as I have many smart devices connected to it. Thanks.

Extremely slow speed r8300 | NETGEAR Communities

15 Replies

michaelkenward
Guru - Experienced User
Jul 11, 2022
PrayJ wrote:

Hi

I am getting very slow speeds through my router.

Measured how? Measured where? Connected how? Wifi? Wired?

Direct connection to my laptop using an ethernet cable gives me a steady 900mbps+ speed.

From laptop to what? Modem? Router?
- plemans
  Guru - Experienced User
  Jul 11, 2022
  What actual speeds are you getting wired into the router?
  
  When you reinstalled after the firmware update, you put you left qos off. did you also make sure to leave parental controls, access controls, and traffic monitoring off? If they were ever enabled, factory reset again and during the reinstall, leave those disabled.
  
  Did you reinstall from a backup? If so, don't.
  - PrayJ
    Aspirant
    Jul 11, 2022
    Thanks plemans
    
    There is no speed issues with a wire connection to the router - steady 900mbps speeds.
    
    QOS, Parental Control, Access Control, Traffic Monitoring were never turned ON or enabled before or after the reinstall.
    No reinstall from backup. This was a fresh reset to factory settings. The only things that are the same are the SSID ID and passwords. I did not change those as I have many smart devices connected to it.
    
    Thanks.
- PrayJ
  Aspirant
  Jul 11, 2022
  Thanks for replying michaelkenward
  
  Measured:
  
  1.Using ethernet cable connected directly to a laptop and a desktop.
  2. Wirelessly with a cell phone, tablet and a laptop in close proximity to the router.
  
  Internet connection is through the modem (CM1000) to the router and from the router to the device using ethernet cable.
  I have changed the cables to rule out faulty equipment.
  
  This same setup was working perfectly fine for a number of years. 900mbps+ speeds through ethernet connection. 500mbps+ wirelessly. Now it is crawling at barely 2mbps. Ethernet connection to the laptop through the router is perfect - steady 900mbps.
  
  Thanks.

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Extremely slow speed r8300