Getting half my service speed through XR700 - Xfinity Gigabit

[dhillonovzki]

Thanks in advance for any assistance.

Just purchased an XR700 a few days ago, having a problem where I'm only achieving half the speeds through the router. When im directly hardwired to my modem it's all gravy. 

I've removed all other hardwired devices and disabled wireless radios, so the router is exclusive to the computer. I've tried disabling QOS through the hamburger menu in the QOS page and have "Share excess" enabled.

I've attached screenshots of speedtests ran via modem and router. Screenshots are from fast.com because that just so happened to be the last site I tried before deciding to post on these forums. I've also tried speedtests from other sites (speedtest.net, fast.com, speedof.me, google fiber test, dslreports) in both scenarios (Hardwired to Modem, Hardwired to router with no other devices) and get the same results.

I'm currently on firmware 1.0.1.8. I was having issues with 1.0.1.20 with R-apps not loading, I read on another thread downgrading would resolve and it has for me.

My modem is a Motorola MB8200 Docsis 3.1.

Thanks again.

[Netduma-Fraser]

Your IP address is exposed in that picture by the looks of it. Also they same to be testing to different servers, can you test using the same server? Set the MAC address of the XR to be the same as the MAC address of the previous router then reboot and see if that helps.

[dhillonovzki]

Thanks for your response. My modem and router are new and don't have the previous hardware anymore.

All other speed test sites reported the same numbers. Speedtest.net was connected to the same server under both tests and still experiencing half speeds connected through router.

[Netduma-Fraser]

Reason I mentioned that is it can take a few days for the router to sync with the network and that speeds it up. Could you set it to the MAC address of the modem? If you start the setup wizard from settings again - no need to complete it, just get to the speedtest - what does it estimate there?

[dhillonovzki]

Ok i'm on it. Also, can you please check your PM. 

[dhillonovzki]

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@Netduma-Fraser wrote:
Reason I mentioned that is it can take a few days for the router to sync with the network and that speeds it up. Could you set it to the MAC address of the modem? If you start the setup wizard from settings again - no need to complete it, just get to the speedtest - what does it estimate there?

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It's reporting my proper service speeds of 938 down/40 up. I stopped there.

[Netduma-Fraser]

Responded to PM. Okay so the router is getting near enough expected speeds so it's not getting through to the devices, could you provide a screenshot of the table view of Device Manager please?

[dhillonovzki]

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@Netduma-Fraser wrote:
Responded to PM. Okay so the router is getting near enough expected speeds so it's not getting through to the devices, could you provide a screenshot of the table view of Device Manager please?

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Ok will do. If you can allow me to do this later today. I definitely want to ge this resolved but work duty calls right now. I hope you can bare with me.

[Netduma-Fraser]

Totally understand, take you're time and I'll respond when I can.

[dhillonovzki]

So was there something specific you were looking for in the device table? I currently have about 10 devices in there but have ran tests when only one device was connected, which was the hardwired computer I was running tests from. It’s currently connected to port 4 which is listed at full duplex with link speed at 1000 Mbits.

[Netduma-Fraser]

That's what I was looking for, thanks. Do you have any other devices you can test with at all? If you use 5GHz WiFi can you achieve higher speeds close to the router?

[dhillonovzki]

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@Netduma-Fraser wrote:
That's what I was looking for, thanks. Do you have any other devices you can test with at all? If you use 5GHz WiFi can you achieve higher speeds close to the router?

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Here is what I tried today. Might be getting close to a return unfortunately. I see other threads with the same issue, any idea if this is a known issue being worked on?

1. Hardwired speedtest via second computer (Macbook). First computer was a PC running Windows 10. Wi-Fi Radios off, all other hardwired devices unplugged. 

    - Macbook hardwired to modem = Full service speeds; >900 Mbps DL.

    - Macbook hardwired to router = Half service speeds; <500 Mbps DL.

    - PC hardwired to modem = Full service speeds; >900 Mbps DL.

    - PC hardwired to router = Half service speeds; <500 Mbps DL.

2. 5ghz speedtest 2 feet from router. Wi-Fi Radio back on.

    - iPhone, iPad, Macbook = Half speeds; <500 Mbps DL.

3. Purchased another modem (CM1000 Docsis 3.1), activated it.

    - PC/Macbook hardwired to modem = Full service speed; >900 Mbps DL.

    - PC/Macbook hardwired to router = Half speeds; <500 Mbps DL.

    - iPhone, iPad, Macbook 5ghz to router = Half speeds; <500 Mbps DL.

4. Updated firmware of XR700 back to current 1.0.1.20 and factory reset.

    - Setup wizard speedtest = 940 Mbps DL, 41 Mbps UL.

    - PC/Macbook hardwired to router = Half speeds; <500 Mbps DL.

    - iPhone, iPad, Macbook 5ghz to router = Half speeds; <500 Mbps DL.

[dhillonovzki]

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@dhillonovzki wrote:

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@Netduma-Fraser wrote:
That's what I was looking for, thanks. Do you have any other devices you can test with at all? If you use 5GHz WiFi can you achieve higher speeds close to the router?

---

Here is what I tried today. Might be getting close to a return unfortunately. I see other threads with the same issue, any idea if this is a known issue being worked on?

1. Hardwired speedtest via second computer (Macbook). First computer was a PC running Windows 10. Wi-Fi Radios off, all other hardwired devices unplugged. 

    - Macbook hardwired to modem = Full service speeds; >900 Mbps DL.

    - Macbook hardwired to router = Half service speeds; <500 Mbps DL.

    - PC hardwired to modem = Full service speeds; >900 Mbps DL.

    - PC hardwired to router = Half service speeds; <500 Mbps DL.

2. 5ghz speedtest 2 feet from router. Wi-Fi Radio back on.

    - iPhone, iPad, Macbook = Half speeds; <500 Mbps DL.

3. Purchased another modem (CM1000 Docsis 3.1), activated it.

    - PC/Macbook hardwired to modem = Full service speed; >900 Mbps DL.

    - PC/Macbook hardwired to router = Half speeds; <500 Mbps DL.

    - iPhone, iPad, Macbook 5ghz to router = Half speeds; <500 Mbps DL.

4. Updated firmware of XR700 back to current 1.0.1.20 and factory reset.

    - Setup wizard speedtest = 940 Mbps DL, 41 Mbps UL.

    - PC/Macbook hardwired to router = Half speeds; <500 Mbps DL.

    - iPhone, iPad, Macbook 5ghz to router = Half speeds; <500 Mbps DL.

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I should add I've also tried all scenarios above with the following router settings:

1. QOS enabled and disabled,

2. Traffic prioritazion enabled and disabled.

3. Changing router MAC to Modem MAC.

4. Changed NAT to open.

5. Disabled Link aggregation.

6. Set Antibuffer bloat to Never/Always/High Priority.

7. Enabled/Disabled Share Excess.

8. The PC "Device type" to computer.

[Netduma-Fraser]

I really don't understand why it's not pushing those speeds through, the only thing we haven't tried yet is a factory reset. Did you have full speeds on the .20 firmware you had issues with? If so it might be some legacy issues carried over when downgrading, that's why we recommend a reset after an upgrade/downgrade.

[dhillonovzki]

The last test I did was upgrading to .20 and factory reseting. I guess theres nothing else to test out?

[Netduma-Fraser]

The only other thing I can think of is to setup guest WiFi and see if you get the same issue, not ideal. Either way I think it's best to pursue a replacement at this stage.