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  1. #1

    [HELP] | Archer VR600 QoS configuration

    Model : Archer VR600

    Hardware Version :

    Firmware Version :

    ISP : [/COLOR]

    Hello everyone,

    I've purchased the Archer VR600 yesterday, and I'm having some trouble configuring QoS.
    When QoS disabled I'm getting full line bandwidth (90MBps), while once I enable QoS, my connection speed getting throttled down to 35-38 MBps.
    Am I doing something wrong?
    Adding a picture of my current configuration.
    P.S - I've tested QoS when only my computer is connected, and only my computer is within the rule list area.
    Name:  Capture.jpg
Views: 0
Size:  28.1 KB

  2. #2
    Is your computer in the High Priority list? Does this issue happen on all your devices? How about the device connected wired to the modem?
    You may reset the modem and reconfigure it to have a try.
    A firmware update is recommended if the firmware is not the latest one.
    If my suggestion can't help, you'd better contact TP-Link support for further analyze.

  3. #3
    Quote Originally Posted by uutommi View Post
    Is your computer in the High Priority list? Does this issue happen on all your devices? How about the device connected wired to the modem?
    You may reset the modem and reconfigure it to have a try.
    A firmware update is recommended if the firmware is not the latest one.
    If my suggestion can't help, you'd better contact TP-Link support for further analyze.
    Yes, I've updated to the latest firmware, the issue happens on both wired and wireless devices, and my computer is listed under High Priority.

  4. #4
    Hmm, that's weird. I haven't meet the same issue. You can contact support@tp-link.com for help.

  5. #5
    I'm having exactly the same problem.. bandwidth down to 35-38 MBps with QoS enabled,
    with other Modem/Router combos (VDSL2 conection here 50MbitDown/10MbitUp, syncs up great with the Archer VR600)
    no such issue.. but other issues with the non-TP-Link devices which is the reason I'm using the Archer.

    Has there ever been a solution to this problem?

    Thanks!

  6. #6
    Same problem here, have 55Mbps downlink, able to achieve 6,1MB download. When I enable QoS, download speed goes down to 3-4 MB/s regardless of settings I use. Tried to fill in correct values (55 Mbps down) and assigned my PC to high priority group. Tried even to fill in fake values 100 Mbps, still no change and speed circles around 3-4MB/s. Tried to adjust high/mid/low ratios to check if speed changes accordingly (set 85/10/5 or 50/30/20), no change - download speed is always around 3-4MB/s. There is definitely something wrong with QoS implementation and unfortunately without this working correctly cant enable limited guest access mode as on my older Archer C5 where I could type in directly maximum speed for guests. Also I set by mistake values in Kbps instead of Mbps and found out that it is probably limiting even LAN connection, because I couldnt even download admin pages how slow it was, even ping went up to 500-1000ms...

  7. #7
    Make sure the device doing speedtest is with the highest priority and disconnect all other devices, stop other applications when testing the speed.
    Try at least 3 times in different at different times.
    If the speed is always slow, contact TP-Link support for help. They may have some solution.

  8. #8
    Quote Originally Posted by vieldcs View Post
    Make sure the device doing speedtest is with the highest priority and disconnect all other devices, stop other applications when testing the speed.
    Try at least 3 times in different at different times.
    If the speed is always slow, contact TP-Link support for help. They may have some solution.
    Well I guess we all have the same problem... it's even perfectly reproducable, you can repeat the same speedtest (and others too) several times, every time
    the same result.. QoS on, 38 Mbit/s max., QoS off, full speed.... it's that easy, it's really just ticking the checkbox on and off and "save" to get this behaviour..

    I'll contact the support.

  9. #9
    Just to keep you in the loop, I contacted support, provided screenshots of bandwith settings and speedtest results ask asked by the first level support.

    We'll see.

  10. #10

  11. #11
    Hi guys, I’ve contacted the support team as well.
    That’s their reply.

    1. I have consulted our team about your question and got the most professional answer.Sorry to say that enabling Qos will absolutely make you get low speed.All of similar products in the market use not only the CPU but also some other chips to transmit data which are designed just for NAT function because is the most important function needed. Generally, products use all of them to provide us high speed .But Qos need all of data to be under the control of CPU so that the CPU can differentiate their priority.To make sure this, the Hardware NAT is turned off in advance automatically.So you are just receiving a speed of 40Mbps.By the way,while there are too many devices making your network crowd,our Qos will ensure the device with high priority have a good connection but while there are only a few devices,it will make no difference as all of the devices can surf online well.

    2. I am sorry to say the bandwidth control is work on the v1 version of VR600 and it is replaced by Qos in v2.Your VR600 v2 is a high-end product, and Qos is also a higher function with the new technology. It is similar to bandwidth control, but it is more smart in distributing bandwidth to your devices when suffering from a network jam.

  12. #12
    Hmmm nice to have answer from support but maybe my English is not advanced enough to fully understand. Do I get correctly that they basically say that CPU in router is slow and cant handle proper QoS beyond 40 Mbps bandwidth? Or is there any other meaning I am missing?

    Anyway I contacted our local support and these guys asked me relevant questions, so hopefully they will find some answers...

  13. #13
    Quote Originally Posted by Wlk View Post
    Hmmm nice to have answer from support but maybe my English is not advanced enough to fully understand. Do I get correctly that they basically say that CPU in router is slow and cant handle proper QoS beyond 40 Mbps bandwidth? Or is there any other meaning I am missing?Anyway I contacted our local support and these guys asked me relevant questions, so hopefully they will find some answers...
    I think thatís exactly what it means. Waiting for your answer.

  14. #14
    Support answered me as well, but with a very different answer... but I don't think this will help me, because I already tried the proposed measure beforehand without result as far as I remember.

    ***

    Why my download speed become slower after I enable Bandwidth Control?
    Enabling Bandwidth Control feature would make total bandwidth 5% loss because of its own mechanism. And the bandwidth you setup on the manage page is measured by ADSL Speed. However, normally the speed you’ve used or tested on the computer is shown as Ethernet speed. And the relationship between them is: [Ethernet Speed] * 1.25= [ADSL Speed].

    For example, the bandwidth offered by ISP, the speed shown by speedtest or downloadable software are all Ethernet speed. Current rate on our modem is Sync rate, which is a bit higher than the real bandwidth ISP provided. If ISP provides 4Mbps bandwidth, usually the modem is synced to higher than 4.5 Mbps, then the Ethernet speed with bandwidth control will be higher than 4.5 *0.8=3.6Mbps. So there will be about 400Kbps rate waste.

    To solve this issue, there is also an "Other" option on Bandwidth Control page. The "Other" bandwidth control option means Ethernet speed. So we can choose "Other" and setup a suitable downstream rate to make full use of our Wide Band.

    ***

  15. #15
    Tried DLS and Other, results are same. And I measured direct throughput on actual download app JDownloader in Windows, in MB/s (megabytes not megabits). I know limits of my line from previous modem, achieving same speeds (6,1 MB/s max). And It is almost halved when I enable QoS regardless of settings.

    Waiting for response from CZ support.


 

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