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New BE550 - Wi-Fi Connection slowing down after some minutes

New BE550 - Wi-Fi Connection slowing down after some minutes

New BE550 - Wi-Fi Connection slowing down after some minutes
New BE550 - Wi-Fi Connection slowing down after some minutes
Thursday
Tags: #Network Connectivity #Access Point Mode #6 GHz #Wi-Fi 7
Model: Archer BE550  
Hardware Version: V1
Firmware Version: 1.2.3

Hi,

Yesterday I bought BE550 router for my home. Some info about:

 

1. I have ISP connected via 1 Gb ethernet to Netgear R7000, it works as router (Wi-Fi is switched off)

2. Via cable 1 Gb it is going to BE550 which is set as Access Point.

3. When first it was switch on for few minutes it worked on 6 Ghz with speed 800 Mb, so it was OK.

4. After few minutes on speed tests it drops to about 200-300 Mb (other devices on LAN from Netgear shows stable 700-800 Mb all the time, so LAN is OK.

5. Which options I tried:

  • Check on 5 Ghz or 6 Ghz
  • Set MLO
  • Set MIMO
  • Switch off Flow control
  • Change channels in 5 GHz and 6 Ghz
  • Switch off Smart Connect
  • Switch Off PSC
  • Change authorizations to other types
  • I used separate names for all bands or one name for all
  • MacBook shows always link on 6 GHz on channel 69, at about 2160-2401 Mb, it is not dropping

 

Always after reset it works few minutes with max speed, after that drops to 200-300 mb, after some time sometimes again works with max speed and drops.

I'm getting crazy with it and I want to send it back, Do You have any idea what to check?

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#1
3 Reply
Re:New BE550 - Wi-Fi Connection slowing down after some minutes
Friday

Hello  @Witek321 ,

Welcome to our community.

 

Based on the information you provided, it appears that the wireless speed instability is currently limited to the 6 GHz band—is that correct?
Does this slowdown in wireless speed affect both download and upload speeds?
Which devices did you use to test the wireless speeds? Is the drop in wireless speed occurring across multiple devices, or is it limited to a single device?

 

Please change the operation mode to wireless router mode for comparison.

Please Disable UPnP and SIP ALG: Go to Advanced > NAT Forwarding > UPnP and disable UPnP. Then go to Advanced > Security and disable SIP ALG. These features can negatively impact Wi-Fi throughput.
Please test with a different speed test server: When using Speedtest by Ookla, try selecting different servers — some servers may give more accurate or higher results than others.
 

 

Welcome to Our Community! Get the latest posts: △New Firmware for Archer GE550/GE650 V1 Introduces AI-QoS, EasyMesh IoT Expansion, and More! △New Firmware Releases for Archer BE805 V1/BE450 V1 to Support VPN Merge, New ECO Mode, and More! More posts, please see: △ Get the Ongoing Pre-release Firmware for Wi-Fi Routers Here— Subscribe for Updates! Urgent problems with your Wi-Fi Router, Range Extender, or DSL Modem? Please reach out via private Messages or @Joesph-TP in your new thread directly. Click △ Or ☆Recommended Solution if the post/answer helps.
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#2
Re:New BE550 - Wi-Fi Connection slowing down after some minutes
Saturday

  @Joseph-TP 

Hi, I checked those. It is the same. But I found that all servers via LAN working on full speed. On Wi-FI some of them always works at full speed, some of them not. i connected older Wi-Fi router 5 Ghz and situation was similar. On some servers I got full speed (around 500 Mb) and on others something like 200-300 Mb. It looks like jitter is much different and on Wi-Fi some servers loosing packets. Is there any solution for that?

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#3
Re:New BE550 - Wi-Fi Connection slowing down after some minutes
Yesterday

Hello @Witek321 ,

Thanks for getting back to us.


It appears that over Wi-Fi, some servers consistently reach full speed (~500 Mbps) while others are limited to around 200-300 Mbps. You've also noticed higher jitter and possible packet loss on Wi-Fi for those slower servers, and the behavior was similar even with a different router. Since the problem only occurs in Wi-Fi environments and involves inconsistent performance depending on the destination server, here are some steps that may help improve stability and throughput:

1. Disable QoS: Log in to the router's web interface (http://tplinkwifi.net), go to Advanced > QoS, and make sure QoS is disabled, as it can interfere with speed performance.
2. Disable UPnP and SIP ALG: Go to Advanced > NAT Forwarding > UPnP and disable UPnP. Then go to Advanced > Security and disable SIP ALG. These features can negatively affect Wi-Fi performance and introduce latency/jitter.
3. Try different Wi-Fi channels: Go to Advanced > Wireless > Wireless Settings and try different 5GHz channels to reduce interference from nearby networks. Some channels may perform better in your environment.
4. Adjust channel width: For 5GHz, set the channel width to 80MHz (or 40MHz if 80MHz causes instability) to help reduce interference and improve consistency.
5. Check Parental Controls: Open the Tether app, go to Parental Control, and ensure no profiles are configured that might affect certain traffic.
6. Update firmware: Go to Advanced > System > Firmware Update and make sure your router is running the latest firmware.

It's worth noting that the variation in speed between different servers over Wi-Fi can also be influenced by factors outside the router itself — such as routing paths, server-side congestion, or how different servers handle the slightly higher latency of Wi-Fi compared to wired connections.

Welcome to Our Community! Get the latest posts: △New Firmware for Archer GE550/GE650 V1 Introduces AI-QoS, EasyMesh IoT Expansion, and More! △New Firmware Releases for Archer BE805 V1/BE450 V1 to Support VPN Merge, New ECO Mode, and More! More posts, please see: △ Get the Ongoing Pre-release Firmware for Wi-Fi Routers Here— Subscribe for Updates! Urgent problems with your Wi-Fi Router, Range Extender, or DSL Modem? Please reach out via private Messages or @Joesph-TP in your new thread directly. Click △ Or ☆Recommended Solution if the post/answer helps.
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#4

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Network Connectivity Access Point Mode 6 GHz Wi-Fi 7
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