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RT-AX92u - Bandwidth

leerees

Senior Member
Hi

I have a 900mbps/900mbps internet connection. The house is served by 2 AX92u's using the wireless backhual. Signal strength between the 2 AP's is 3 bars (-65db).

Realistically most devices can get around 400mbps over wifi (or the full 900mbps via ethernet).
However, when using wifi devices that download at 400mbps I am facing bufferbloat issues. Pings to Google rise from 10ms to 100ms.

Is the 400mbps limit that I am seeing shared between all wifi devices on the 5Ghz band? If so? should i not be setting a speed limit of 400mbps?

Wifi calling is very jittery and it's really starting to effect us as we are 100% reliant on wifi calling. It's the sole reason why we purchased this setup (XBOX gaming pings is secondry to wifi calling)

We have 2 XBOX gamers in the house (both connected to the master RT92u via ethernet.

Can anybody help us out with how to setup QoS. We have tried Asus 1st line and second line support as well as our ISP but neither were able to offer any suggestions. The only advice we was given was to enable adaptive QoS which just didn't work. It was our hope that setting a global speed limit of 800mbps would solve all the issues but it hasn't worked.

I'd really appreciate any help or advice as we have been reading guides online for over 2 months now without any further progress. The internet connection itself is commercial grade and we've tested it on our old ISP router via ehternet by downloading a massive torrent with tens of thousands of connections without any bufferbloat issues. Nobody in our household actually uses torrents normally and the average bandwidth load seems to be under 50mbps.

Would opening up the wifi6 channel to client wifi devices solve the wifi calling issues? All of our phones support wifi 6. Do we run the risk of causing further bandwidth issues by saturating the backhaul or would this not be an issue with 900mbps internet?
 
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