Bufferbloat issues on GE550
Hello everyone,
I recently replaced my old ASUS RT-AC86U with a TP-Link Archer GE550, expecting a noticeable improvement in performance and stability under heavy traffic. My main reason for upgrading was recurring bufferbloat issues on the ASUS, especially when running Stremio on a TV while gaming, which caused latency spikes during gameplay.
After installing the GE550 and placing my ISP modem in bridge mode (no double NAT), I started testing the connection using the Waveform bufferbloat test. To my surprise, with QoS enabled, the GE550 consistently scores a bufferbloat grade F, caused almost entirely by extreme latency increases during upload (hundreds of milliseconds).
I have already tried the following troubleshooting steps:
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Enabling bandwidth-based QoS
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Manually limiting upload and download bandwidth well below my actual line speed
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Prioritizing my gaming PC using Game Accelerator
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Disabling traffic analysis and monitoring features
Despite these adjustments, the issue persists whenever QoS is enabled. Upload saturation causes massive latency spikes, making gaming and other real-time applications unusable under load.
However, when I disable QoS completely, the behavior changes drastically:
the bufferbloat disappears, latency remains stable, and I consistently achieve an A+ rating on the Waveform test.
This suggests that the problem is not related to my ISP, modem, or double NAT, but rather to how QoS / queue management is implemented in the GE550 firmware. This is disappointing, as the GE550 is expected to be significantly more powerful and modern than the RT-AC86U, yet in my environment it only performs well with QoS turned off.
At this point, if this behavior cannot be improved via configuration or firmware updates, I am seriously considering returning the GE550 and reverting to my ASUS, or moving to a different solution altogether.
My questions are:
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Have other users experienced similar upload bufferbloat issues with QoS enabled on the GE550?
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Is there any plan to improve queue management or implement proper SQM (fq_codel, CAKE, or similar) in future firmware updates?
Any feedback from TP-Link staff or other users would be greatly appreciated.
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Hello Joseph iam having the game issue bufferbloat problem the router is not working as its best, is the beta version already available? Any version that you can send me to fix This problem?
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Hello @Farukba ,
Yes, we recently released a firmware. Please install it: Archer GE550_V1_1.3.0 Build 20260328(Beta Firmware)
For more details, please refer to What Can I Do If QoS Enabled Causes BufferBloat and High Latency on My Router After Firmware Update?
Let us know if it can help~
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Hi All & @NandoAoT ,
We have released a firmware for this case, please install it in What Can I Do If QoS Enabled Causes BufferBloat and High Latency on My Router After Firmware Update?
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@Joseph-TP Hello. Do you have the changelog to share with us ? I can see that we have two differents betas right ? V1 1.1.3 and v1 1.3.0 ? Thank you.
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Hello @JPromano ,
Version 1.3.0 beta primarily fixes the anomaly that causes latency and bufferbloat when QoS is enabled, and is applicable to users in all regions.
Version 1.1.3 pre-release mainly introduces new features, allowing users of the non-EU version to try them out in advance. For details on feature introductions and improvements, please refer to: New Firmware for Archer GE550/GE650 V1 Introduces AI-QoS, EasyMesh IoT Expansion, and More!
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@Joseph-TP Thanks for the info. So, is that possible to return to the previous version(stable) if I need ?
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I have the US version and This beta update does not install on my router, can you send me another version?
Iam currently using This version
Firmware Version:
1.2.1 Build 20250828 rel.57524(5553)
Hardware Version:
Archer GE550 v1.0
Model:Archer GE550(US)
Ver:1.0
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Hello @Joseph-TP , I am using the 1.3.0 version, does 1.1.3 contais the QOS fix?
Update:
Tried to flash v1.1.3 and there is a "updade error" happening...
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Hello @JPromano ,
If you installed firmware 1.3.0 beta, you cannot currently revert directly to the previous version.
If you have firmware 1.1.3 Pre-release, it is not recommended to roll back to the previous version, such as 1.1.2.
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Hi @Farukba
You likely manually updated to the EU version 1.2.1 Build 20250828 rel.57524.Since it's version 1.2.x, and the 1.1.3 pre-release is version 1.1.x, the inability to 'downgrade' is normal. We are still seeking further advice on this type of situation.
If there is any progress, we will reply here.
Farukba wrote
I have the US version and This beta update does not install on my router, can you send me another version?
Iam currently using This version
Firmware Version:
1.2.1 Build 20250828 rel.57524(5553)
Hardware Version:
Archer GE550 v1.0
Model:Archer GE550(US)
Ver:1.0
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