Deco M9 Plus slow Ethernet & Wifi connection with fast internet
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This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Much like the old thread, https://community.tp-link.com/us/home/forum/topic/152513, I'm getting solid 350+Mbps on a speed test from the Deco app but ~125Mbps to any devices.
The firmware is up to date.
I've tested devices:
* Ethernet connected to the main Deco
* Wifi connected within a foot of the main Deco
* Wifi connected to the main Deco with 2.4GHz turned off
All tests return very reliable ~125Mbps.
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Thank you for your help and pointing to the chat.
The solution was to turn off the QoS settings.
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What mode are you using the Deco in? Also is the Deco acting as the router or just as a wired and wireless AP?
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The Deco is a wifi router.
Mesh mode is on but my tests are from the unit pluged directly into the cable modem. I've tried turning off mesh as well.
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Have you ran a speed test from the main unit via the Deco App? What were the results? When you test on your device are you using the same test server?
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When I run the test from the app to get the speed that the router is seeing through the modem, I get 300-350Mbps.
When I run the speed test from anything going through the router (wired or wireless) to the same speed test site, I get ~125Mbps.
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I've added highlighting to the original post as it's answered your recent questions. Is there a way to chat directly without posting on the forum and waiting for a response?
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Model: Deco M9 Plus
Firmware Version: 1.4.3
Much like the old thread, https://community.tp-link.com/us/home/forum/topic/152513, I'm getting solid 350+Mbps on a speed test from the Deco app but ~125Mbps to any devices.
The firmware is up to date.
I've tested devices:
* Ethernet connected to the main Deco
* Wifi connected within a foot of the main Deco
* Wifi connected to the main Deco with 2.4GHz turned off
All tests return very reliable ~125Mbps.
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I've tried these tests with and without a second Deco in mesh. All speed tests are consistent at ~125Mbps.
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Thank you for your help and pointing to the chat.
The solution was to turn off the QoS settings.
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Good to know. in my experiance QOS typically only affected wireless devices and to the remote nodes so its good to know for future.
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