AX86U link speed hitting 940mb/s but no wifi on any device can get above 600mb/s

[travellinground]

Hi, I am struggling to figure out what to do here, my link speed is consistently good:

But my wifi speed is not:

This is taken from 2m away! I am just baffled.

Here are my current settings. I've also disabled QoS, ipv6, parental controls, and traffic analyzer. Help!

 

[Tech Junky]

Download a WIFI Analyzer app to your phone and scan your channels. If there's a ton of AP's near you use a channel other than 1 / 6 / 11. I have 30 units around me and opted for CH 8 on 2.4. For the 5Ghz it's going to be a similar situation where the default every manufacture aims for is 36.

 

[leerees]

Try enabling auto select channels to include dfs channels

As Tech Junky stated, it could simply be that there are loads of AP's nearby.

 

[IdleWild]

Quick question. Why do you expect to hit over 600mbps? Have you seen your devices being capable of more with another router etc? Or someone reported these devices can get more than 600 etc? I have ax86U but not a single wifi-6 capable device..

 

[disjt]

If you go to system log then wireless log, you'll see the connection details between your router and devices. You'll see something like this in the bottom of the log:

Stations List                           
----------------------------------------
idx MAC               Associated Authorized   RSSI PHY PSM SGI STBC MUBF NSS   BW Tx rate Rx rate Connect Time
    xx:xx:xx:xx:xx:xx Yes        Yes        -44dBm ac  No  Yes No   No     1  80M  433.3M  866.7M     01:08:52
    xx:xx:xx:xx:xx:xx Yes        Yes        -49dBm ax  Yes Yes No   No     2  80M  907.4M      6M     12:00:01

You want to look at the PHY, NSS, and BW columns. Those will determine the maximum Tx/Rx rate.
For example, in the second row, I have AX, 2, and 80M. That means I have 2 streams and the device can use 80 Mhz bandwidth. The Tx/Rx rate columns show the established rate between the device and the router. You'll never achieve 100% of the Tx/Rx rate since you're not in ideal conditions and your router probably has to share airtime with other connected devices. 50% of the Tx/Rx rate would be a good target if you're doing a speedtest.

For AX, 2 streams, and 80 MHz, the max Tx/Rx rate you can get is 1200 Mbps.
For AC, 2 streams, and 80 MHz, the max Tx/Rx rate you can get is 866 Mbps.
Divide the rate by 2 if you have 40 MHz, and divide again by 2 if you have 1 stream.

 

[IAAI]

Try and set the 5 ghz to channel 149
Reboot both router and cell phone then test

 

[bbunge]

Hi, I am struggling to figure out what to do here, my link speed is consistently good:
View attachment 38956


But my wifi speed is not:
View attachment 38957

This is taken from 2m away! I am just baffled.

Here are my current settings. I've also disabled QoS, ipv6, parental controls, and traffic analyzer. Help!
View attachment 38960

Using channels 149-165 or U-NII-3 will not allow the router to switch up to 160 MHz bandwidth. Using U-NII-1, starting with channel 36, or DFS channels will allow the router to use 160 MHz bandwidth. However, using DFS channels has the potential of being bounced by RADAR. The router scans for the presence of RADAR and can adjust the bandwidth accordingly.
See: https://en.wikipedia.org/wiki/List_of_WLAN_channels
On 5 GHz I use either Auto channel or set to channel 36 at 20, 40, 80, 160 MHz. Most of the time the router selects 80 MHz bandwidth but when one of our WIFI 6 clients connects it jumps up to 160 MHz bandwidth.

 

[Tech Junky]

On 5 GHz I use either Auto channel or set to channel 36 at 20, 40, 80, 160 MHz. Most of the time the router selects 80 MHz bandwidth but when one of our WIFI 6 clients connects it jumps up to 160 MHz bandwidth.

I find the best option is to set a channel / test and try other channels until you find one that's consistent.

So, you can see here I've picked 40 but it's using 36-64 for 160. 50-64 are DFS potential issues of forcing a rescan.

When using 160 you bundle channels together to get the higher bandwidth. You're just setting the primary / control channels based on your surrounding RF to avoid recalculations which increases performance.

If you think you're getting knocked down due to DFS pings hitting you then move the device somewhere less likely to be pinged.

36 is the default for 5Ghz and if you use a wifi analyzer app on your phone you'll see what you're contending with around you for congestion.

Picking a channel / power level to broadcast at will give you better results.

 

[Tech9]

This is taken from 2m away! I am just baffled.

Just check the link speed in Client List or System Log, Wireless Log. It will give you the answer why.

 

[travellinground]

Okay, have actually had time to get to this now, thanks for all the responses!

1. Here's the channels for 5G, which is really what I care about. I am running a mesh with 2x XT8's, which I'm pretty sure are the Channel 40 ones. The channel 153 is the main router.

2. I tried included DFS channels and if anything it made things slower.

3. Here's the wireless log:

4. Yes, I've got a Wifi6 capable device that has hit 900mbps at work, here's an example of hitting 680:

 

[disjt]

The Tx/Rx rates you see in the log are the max link assuming 0 overhead, 0 interference and 100% dedicated connection between the router and that single device. In reality, hitting 50% of that in a speed test is nice. Your devices are also using 80MHz bandwidth. With 160MHz, your Tx/Rx rate might double up to a maximum of 2400M/2400M. If your work wifi uses 160MHz, that might explain part of the speed gap between work and home.

Are you running wired or wireless AImesh? I'm guessing wireless since you have 2 4-stream devices in your log which are probably your 2 XT8s. I'm not that experienced with AImesh but that might impact the speed since your main AX86U router is sharing the airwave between 3 devices and the backhaul for the 2 mesh nodes. That could explain the rest of the speed gap.