Solution What Can I Do If QoS Enabled Causes BufferBloat and High Latency on My Router After Firmware Update?
This Article Applied to:
Archer BE230_V1/V1.20
Archer BE230_V2
Archer AX55_V1
Archer AX55 Pro _V1
Archer AX72_V1
Archer AX72 Pro_V1
Archer GXE75_V1
Archer AX53_V1
Phenomenon:
Some users have reported performance degradation in their routers after enabling QoS following a firmware update.
Specifically, Bufferbloat test scores for both wireless and wired clients have significantly decreased (e.g., from A/B to F). Serbian_Fantom mentioned this unexpected behavior here.
Additionally, a noticeable increase in upload latency may occur, resulting in higher latency and jitter when the network is under heavy load.
Disabling QoS can resolve the performance degradation described above.
We have identified the cause of these unexpected behaviors. Please take a look at the following feasible solutions.
Available Solutions:
Solution 1:
Our development team has provided the following beta firmware to address this unexpected behavior for the models that have already been reported. Please install the beta firmware for your router if you encounter this anomaly.
| Model | Direct Download Links |
| Archer BE230_V1/V1.20 | Archer BE230_V1/1.20_1.2.1 Build 20250821(Beta Firmware) |
| Archer BE230_V2 | Archer BE230_V2_1.1.3 Build 20260127 (Beta Firmware) |
| Archer AX55_V1 | Archer AX55_V1_1.5.11 Build 20260205(Beta Firmware) |
| Archer AX55 Pro_V1 | Archer AX55 Pro_V1_1.4.3 Build 20251202(Beta Firmware) |
| Archer AX72_V1 | Archer AX72_V1_1.4.1 Build 20250918(Beta Firmware) |
| Archer AX72 Pro_V1 | Archer AX72 Pro_V1_1.4.1 Build 20250918(Beta Firmware) |
| Archer GXE75_V1 | Archer GXE75_V1_1.1.1 Build 20251024(Beta Firmware) |
| Archer AX53_V1 | Archer AX53_V1_1.5.4 Build 20251230(Beta Firmware) |
| Archer GE550_V1 | Archer GE550_V1_1.3.0 Build 20260328(Beta Firmware) |
Note:
- Please be sure you have read the Beta Test Agreement before upgrading the beta firmware!
- For the sake of insurance, it's always recommended to save a copy of the router's Backup Config file before upgrading or downgrading.
- You may follow the guide to upgrade the firmware of your router. How to Upgrade the Firmware on the TP-Link Wi-Fi Routers.
Solution 2:
If you don't want to try the beta firmware, you can temporarily disable the QoS feature.
We welcome you to share your experiences with the beta firmware. If the beta firmware doesn't help, please provide details on your router's current operation and any other relevant information. Like the complete network topology, specific exception details, when the problem started, etc.
What if your router model isn't among those mentioned above, but you've also experienced unexpected bufferbloat and high latency after enabling the QoS feature during firmware updates? Please provide your router model, including firmware and hardware versions, for reference: How to find the hardware and firmware version of my TP-Link device?
Thank you for your feedback and support.
Update Logs:
Jan 29th,2026 added Archer BE230_V2 Beta Firmware
Feb 5th,2026 updated Archer AX55_V1 Beta Firmware
Apr 14th,2026 added ArcherGE550_V1 Beta Firmware
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BUFFERBLOAT GRADE
C
LATENCY
Unloaded
51 ms
Download Active
+69 ms
Upload Active
+14 ms
SPEED
↓ Download
177.5 Mbps
↑ Upload
13.9 Mbps
Unloaded
Min: 45.9 ms
Median: 49.5 ms
Max: 58.5 ms
Mean: 50.5 ms
25th %ile: 48.9 ms
75th %ile: 51.6 ms
95th %ile: 56.4 ms
Jitter: 2 ms
↓ Active
latency: 208.00ms
time: 11:37:24:93
Min: 47.4 ms
Median: 97.4 ms
Max: 447.4 ms
Mean: 120 ms
25th %ile: 86.6 ms
75th %ile: 109 ms
95th %ile: 359.2 ms
Jitter: 48.2 ms
↑ Active
Min: 44 ms
Median: 54.9 ms
Max: 362.5 ms
Mean: 64.3 ms
25th %ile: 50.6 ms
75th %ile: 63.9 ms
95th %ile: 84.7 ms
Jitter: 16.9 ms
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Good evening,
The hardware version is: Archer GE230 v1.0
The firmware version is: 1.1.0 Build 20250801 rel.36047(4555).
Disabling QoS helps reduce bufferbloat, but it’s still present.
I tried installing the beta version listed on the first page, but I got an upload error.
This error occurs no matter which firmware I try to install.
ISP modem—router )))((( client devices --- that is my current setup.
I only use a wired connection; Wi-Fi is disabled.
I followed the same steps with an AX72Pro and everything works perfectly.
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