Need help configuring WIFI - Latency problems WIFI

Installing and Using OpenWrt
1

Hello,

I need your expertise. Lately I have been getting bad latency spikes on our WIFI. Our iPad PRO even dropout in the middle of playing online games.

I have not been able to solve it. I have tried different settings for the SQM-QoS, for packet steering and Flow offloading.

Earlier this year I upgraded our router to a Fujitsu S920 running the latest stable x86/64 build of OpenWRT and have an Archer C7 v2 as a dumb AP (latest stable release).

The connection is fiber 100/100. On the computer connected to the Dumb AP with a cable. I consistently get A+ with low latency on Waveform.

On WIFI Waveform gives a A+ rating, but sometimes just an A or worse, with a notice that the connection is bad for low latency gaming.

Settings are mostly default.

Fujitsu S920 settings:
SQM QoS installed, ingress/egress = 90/90, running Cake, piece of cake.qos, Overhead 44.
Packet Steering is disabled
Flow offloading is disabled

Dumb AP – Archer C7 v2:
Packet Steering is disabled
Flow offloading is disabled

The Archer c7 v2 has an QCA9880 and support TXQS/ATF/AQL.

The OpenWRT Dumb AP setup suggested configuring AQL to solve latency issues on the Dumb AP. But I cannot find any information about how you are supposed to do it?

I have also seen posts talking about different ath10k firmwares? Could this be the issue?

Best regards.

2

if you bypass the wifi, and use a wired connection, are you experiencing the same issues ?

1 Like
3

No issues while using a wired connection to my computer. On the computer connected to the Dumb AP with a cable consistently get A+ with low latency on Waveform.

4

Just found this. Might be a problem with the firmeware after all.
ath10k firmeware instead of ath10k-ct

5

if you don't mind reflashing your C7, try 24.10rc7, TP-EAP245, error log. ath10k - #6 by frollic, using the image for your device, obviously, not the EAP.

1 Like
6

Thank you! I will try this. The issue is most likely from the ath10k-ct firmeware. My archer c7 v2 has been working flawlessly earlier.

7

I have now installed a customized firmeware with kmod-ath10k and `ath10k-firmware-qca988x. I also changed SQM QoS ingress/egress to 85/85.

The issues seem to be mostly mitigated on most devices. Apple devices still have random jitter and latency spikes thought... (It just works :sweat_smile:)

Unloaded jitter is often the problem. Why is that?

I live rurally and there are no other WIFI networks nearby.

Any suggestions for the best configuration for the lowest possible latency and jitter on WIFI? And do I go about configuring AQL?

8

you should probably create a new thread about this ...

9

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