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AX18 slow upload speed

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AX18 slow upload speed

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AX18 slow upload speed
AX18 slow upload speed
2025-10-01 09:59:31 - last edited 2025-11-14 09:33:52
Model: Archer AX18  
Hardware Version: V1
Firmware Version: 1.2.1 Build 20250729 Rel. 73566(4555)

Hi,

 

I use my AX18 in Access Point mode and the upload speed is terrible. I switched to router mode, the same. Rest to factory defaults, the same. I checked and changed the internet-cable, no success. If I use another access point at the same spot, everything is fine. Here are the last results:


This is the result from a PC, which is directly attached to the internet cable:


My ISP is our local distributor (GW Halstenbek, Germany), fiber optic connection, down 250, up 50, wlan tested with 2,4GHz and 5GHz

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Re:AX18 slow upload speed-Solution
2025-10-09 11:20:37 - last edited 2025-11-14 09:33:52

Hello @Karsten52 ,

Welcome to our community.

 

For your case, please ensure that wireless and wired testing are performed using the same device (connect via a USB/Type-C to Ethernet adapter) to rule out issues with the device's network card.

Close all background applications (such as cloud sync and P2P downloads) to prevent them from occupying upload bandwidth.

 

  1. Test by frequency band: If the 5GHz upload speed is normal (close to 50Mbps), the problem is with the 2.4GHz band. If the 5GHz band also exhibits abnormalities, the issue lies with the 2.4GHz band.
  2. Scan the wireless environment: Use a mobile app (such as WiFi Analyzer) to check for 2.4GHz channel congestion. Avoid overlapping channels other than channels 1, 6, and 11, and choose a channel with minimal interference. For 5GHz, it's recommended to prioritize DFS channels (such as 36-64, 100-144) to avoid radar interference, but make sure your router supports this.
  3. Optimize the physical environment: Place the router in an open area, away from interference sources such as microwave ovens, Bluetooth devices, and wireless cameras.

Adjust the antenna angle to a vertical position (optimal coverage for 2.4GHz omnidirectional antennas).

Welcome to Community！ Check Out the Latest Posts: △New Firmware for Archer GE550/GE650 V1 Introduces AI-QoS, EasyMesh IoT Expansion, and More! △New Firmware for Archer BE800 V1 to Support VPN Merge, EasyMesh Guest/IoT Extend, and More △New Firmware for Archer BE805 V1 to Support VPN Merge, New ECO Mode, and More △New Firmware for Archer BE400 V1 to Support IPv6 VPN, And More △New Firmware for Archer BE900 V2 to Support Multi-WAN And More Click △Helpful Or ☆Recommended Solution if the post/answer helps.
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Re:AX18 slow upload speed-Solution
2025-10-09 11:20:37 - last edited 2025-11-14 09:33:52

Hello @Karsten52 ,

Welcome to our community.

 

For your case, please ensure that wireless and wired testing are performed using the same device (connect via a USB/Type-C to Ethernet adapter) to rule out issues with the device's network card.

Close all background applications (such as cloud sync and P2P downloads) to prevent them from occupying upload bandwidth.

 

  1. Test by frequency band: If the 5GHz upload speed is normal (close to 50Mbps), the problem is with the 2.4GHz band. If the 5GHz band also exhibits abnormalities, the issue lies with the 2.4GHz band.
  2. Scan the wireless environment: Use a mobile app (such as WiFi Analyzer) to check for 2.4GHz channel congestion. Avoid overlapping channels other than channels 1, 6, and 11, and choose a channel with minimal interference. For 5GHz, it's recommended to prioritize DFS channels (such as 36-64, 100-144) to avoid radar interference, but make sure your router supports this.
  3. Optimize the physical environment: Place the router in an open area, away from interference sources such as microwave ovens, Bluetooth devices, and wireless cameras.

Adjust the antenna angle to a vertical position (optimal coverage for 2.4GHz omnidirectional antennas).

Welcome to Community！ Check Out the Latest Posts: △New Firmware for Archer GE550/GE650 V1 Introduces AI-QoS, EasyMesh IoT Expansion, and More! △New Firmware for Archer BE800 V1 to Support VPN Merge, EasyMesh Guest/IoT Extend, and More △New Firmware for Archer BE805 V1 to Support VPN Merge, New ECO Mode, and More △New Firmware for Archer BE400 V1 to Support IPv6 VPN, And More △New Firmware for Archer BE900 V2 to Support Multi-WAN And More Click △Helpful Or ☆Recommended Solution if the post/answer helps.
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