Archer 1900 C9 - slow download speed/ fast upload speed after firmware update

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Archer 1900 C9 - slow download speed/ fast upload speed after firmware update

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Archer 1900 C9 - slow download speed/ fast upload speed after firmware update
Archer 1900 C9 - slow download speed/ fast upload speed after firmware update
2017-10-06 10:17:03
Model :

Hardware Version :

Firmware Version :

ISP :

Hello!

I recently updated the firmware on my Archer 1900 C9 V1.0 (US) to latest firmware on TPLINK US website: "archer_c9v1_us-up-ver3-17-0-P1[20161008-rel64225]". After the update, the download speed is fluctuating between high speeds (70 mps), and really low speeds (2 mph), while the upload speed is consistently high (8 mph).

I was wondering if there is a setting that I need to adjust on the router. Thank you in advance for your suggestions and advice!
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#1
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Re:Archer 1900 C9 - slow download speed/ fast upload speed after firmware update
2017-10-06 19:19:49
the problem happens on 2.4G or 5G wifi? you may try to change the wifi channel and channel width
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#2
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Re:Archer 1900 C9 - slow download speed/ fast upload speed after firmware update
2019-02-16 09:09:06

Hello,

 

I just upgraded my internet to Google fiber and noticed the same thing. My download speed is around 99.0 Mbps while the upload is 780 Mbps. Not sure why. If you find the answer I would relay like to know.

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Re:Re:Archer 1900 C9 - slow download speed/ fast upload speed after firmware update
2019-03-08 00:36:47

@ZeroTwo It would be best to test the speed on different devices as sometimes the device you are using may be the bottleneck. If you consistantly get the speeds you mentioned, try a wired connection to see what the LAN gives you.

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