Tplink AX55 V1 firmware 1.5.11 massive bufferbloat
Tplink AX55 V1 firmware 1.5.11 massive bufferbloat
Just wanted to report an issue after updating my Archer AX55 V1 to firmware 1.5.11.
Right after the update, everything seemed fine. But once I enabled QoS, the router basically became unusable.
What I’m seeing:
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Massive bufferbloat as soon as QoS is on
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CPU usage spikes straight to 100%
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RAM usage looks normal
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Ping jumps from a stable ~49 ms to 290 ms+
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Web UI becomes extremely slow and at times I can’t even log in to the router
Disabling QoS immediately brings things back to normal, so the issue seems directly tied to QoS behavior on 1.5.11.
This wasn’t happening on the previous firmware with the same settings and same network load.
Has anyone else on AX55 V1 experienced this on 1.5.11?
Any known fixes, or is this a confirmed firmware bug?
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Hi @AIRL ,
Thanks for contacting our community.
The latest beta firmware for Archer AX55-v1 has been released at: What Can I Do If QoS Enabled Causes BufferBloat and High Latency on My Router After Firmware Update?
As for the next official firmware update, there is no confirmed release date yet. You can check the official website for firmware updates or enable the Auto Update button.
Best Regards.
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@Joseph-TP
Experienced 2 issue just as of now.
1. The router became laggy. unable to login to router even with local login, needed to restart the router in order to login.
2. Had an issue where my 2x RE315 wifi extenders under onemesh is connected but not having internet connection. Restarting the router fixed this.
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LemonyLime wrote
waveform<dot>com (hover the mouse pointer over "Guides & Tools" and the select "Bufferbloat" right under "Tools")
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Hi, I'm also reporting a problem with the AX55 router on latest official firmware. When connecting the Easy Mesh network, the router overloads, or rather the CPU jumps to 99%, slows down and the connection stops working until restarted. I downloaded the beta firmware and I'm testing it now... I had QoS turned off and it couldn't have affected the overload.
My setup - main AX55 router + two AX53 routers connected using Easy Mesh via Ethernet Backhaul.
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Hello @Retro_0223 ,
Sorry for the late reply.
Did the following situation you mentioned occur after Archer AX55 was updated to version 1.5.11 beta?
Will you see any error message when the network drops?
Retro_0223 wrote
@Joseph-TP
Experienced 2 issue just as of now.
1. The router became laggy. unable to login to router even with local login, needed to restart the router in order to login.
2. Had an issue where my 2x RE315 wifi extenders under onemesh is connected but not having internet connection. Restarting the router fixed this.
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Hello @Pisek ,
Welcome to our community.
May I know if your network topology diagram is as follows:
ISP modem—AX55)))((( client devices
└───Two AX53
(Note: — stands for wired connection,)))((( stands for wireless connection )
What happens if you connect to the EasyMesh network before updating the firmware?
If you temporarily disable the EasyMesh network, will the connection become stable?
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