Deco M5 latency to modem/router spikes.
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I am experiencing issues with a new Deco setup at home.
I have 3 Deco M5s which have drastically improved the connectivity in my home.
The only issue that I cannot seem to fix (using existing TP-Link support threads) is that the latency coming off of the Decos when communicating to the main router is not consistent and frequently (every 10s or so) will drop connection entirely for a brief moment. It will be fine at 20-25ms and then I can watch the pings and see it steadily climb to 5000ms before going offline and then starting back at 20ms.
It's not noticeable usually when doing general things like surfing or watching a buffered video, but voice calls and video games are nearly un-usable.
Things I have attempted which either don't fix the issue, or stop the Deco from working at all:
- disable DHCP on the ISP's provided modem/router
- switch the deco between router and AP mode.
- reset the deco network and start from scratch
I am not able to bridge the modem/router from the ISP because it disables other services which are controlled by the device (IE: Moca, Tivo)
I have also been testing pings directly wired to and on the wireless provided by the ISP device and everything is fine there.
I attempted to troubleshoot with the ISP but they aren't willing provide assistance when using a third party device.
I can provide any futher information required.
Thank you,
Dave
Hi, and thanks for the reply.
1. What is the network diagram? How do you connect these devices together？
The ARRIS modem is connected through ethernet port 4 (it's the bridge port according to their docs) to the main deco. The other two m5's are connected via the app wizard to one another.
2. What is the operation mode of the Deco?
Currently the deco is in Router mode, but I have tried for an extended period (months) in AP mode with the same issue.
3.
As you can see in the image - while pinging google, there are timeouts, and high latency (312ms) . I have run this ping test for hours without using the decos (on the ARRIS WiFi) with no timeouts or spikes.
5. This is difficult to do since the deco goes offline so briefly. The decos never appear to change the LED from solid green.
6. The deco network previously had fast roaming enabled (prior to this reply) but I have since disabled it. The ping screenshot is with Fast Roaming disabled.
Thank you for your help.
Hi Kevin,
I have tried the advice to switch to AP Mode, but I am still seeing consistent high latency - see screenshot:
Here is my IP information when I am experiencing latency spikes:
When requests timeout, or high latency occurs, the WIFI connection remains connected, it doesn't disconnect from the deco at all. Just experiencing the high latency.
Thank you for the support.
Hi Kevin,
I have been testing this again with only 1 deco M5 connected to my Arris Modem. The other decos are offline.
I still receive consistent latency spikes when connected to the deco in AP mode or in Router mode.
As you can see in the screenshot, my connection from my wireless PC to the deco has no issues:
The issue must be when the deco is speaking to the Arris modem.
I have also tried running the deco M5 in router mode, with DHCP turned off on the Arris modem, and also bridged mode turned on on the Arris modem. But I still see the same consistent latency spikes.
This issue is becoming very frustrating as I cannot use the M5s in this state.
Is there perhaps a more stable previous firmware I can downgrade to?
Thank you.
