BE550, QoS + Flow Controller = huge bufferbloat
Hi, I have an asymmetric internet speed (2500/250). I wanted to limit the upload using QoS, but as a result, a very large bufferbloat (and jitter) appears in all checks. But I found that if I turn off the flow controller on LAN and WAN, then everything becomes normal. Therefore, I have a question to which I have not found a clear answer, is a flow controller needed at home? What is its role in TP-Link routers? Thanks.
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Hello @AlexG1 ,
Welcome to our community.
We have reported the case to our support engineers, and they will likely contact you via email to continue troubleshooting your issue. Please check your email inbox and confirm.
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@Joseph-TP I've the same issue after installing the latest firmware 1.1.4 Build 20250813 rel.41793(5553). I've 360Mbps upload and tried to use QoS to limit it to 350 MBps, the upload ping jump above 100ms. If I set the upload to 2500Mbps (port speed), the ping is better than idle ping. OoS was fine on the previous firmware.
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Hello@Holiday25 ,
Welcome to our community.
Where are you using the router? Have you enabled Flow Controller? If yes,please disable it for a try.
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@Joseph-TP I would also like to know if having the flow controller disabled on the LAN and WAN causes problems on a home network.
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This post is a month old. We updated the firmware for Archer BE550 in September. Please update to the latest firmware for comparison.
1.2.1 Build 20250813 rel.27119 for US version;
1.1.4 Build 20250813 rel.41793 for EU version.
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@Joseph-TP, my be550 is V2.
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There's no explicit mention of a flow controller causing the issue.
I have replied to you in another post. It is recommended that you reply in a single post. In case I missed your reply.
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