Asus AX/AXE Slow Upload Speeds

[atomicRPM]

Unfortunately this update did not fix the issue. I still get 113 MB/s down and 52 MB/s up.

 

[atomicRPM]

I isolated my issue to the box running iperf. For some reason the nic in that box started limiting traffic in one direction to 50%. The RT-AX86U's in mesh are fine. My issue started Sunday.

 

[willyburz]

The new update finally made all wifi speed better again! I got really odd capped speeds on the previous April firmware...the new release that just hit, fixed everything!

 

[atomicRPM]

Ok, my issue was tcp congestion on the nic. I forgot I was working on the sysctl.conf file and had a stripped down file in it's place. Of course when I did a rare reboot I forgot about it all my net.ipv4 and net.core settings weren't loaded. All is good here.

 

[IAAI]

Nothing changed yet

 

[Piel]

ASUS has had issues with upload speeds for MONTHS for users on Fios - I have an XT8 based network with wired backhaul and I have given up trying workarounds

 

[supe]

I recently bought a ax86u after my ac86u up and died right after the 2yr warranty expired. I get slow upload speeds within my LAN from my computer(Wifi) to my NAS(wired) if I enable Traditional QOS.
I am not sure if its the same root cause but I thought I'd add to the data points, hoping it helps narrow down the cause of the slow speeds.

 

[slvrscoobie]

just got the AX86u today, from my AC3100- Gigabit, 900/900 before upgrade, now I get 900/350. and on wifi I'm at 750/150 - what the heck?

 

[slvrscoobie]

ready to return this - - unacceptable out of the box LAN performance. my 3100 does 900/850 reliably. Merlin firmware, QOS disabled

 

[Grayson73]

Which AC3100?

 

[slvrscoobie]

Which AC3100?

Asus

 

[Grayson73]

I wonder if there is a mesh router that will do 1000/1000 or close to that.

 

[L&LD]

The RT-AX86U is superior to the RT-AC3100 and will easily do 1Gbps WAN/LAN speeds.

You have not properly set up the router and/or your network to allow it to do so.

 

[Grayson73]

Agree that WAN/LAN is fast. The issue is Wi-Fi upload speed. This thread has info about that bug. https://www.snbforums.com/threads/asus-xt8-app-upload-speed-much-faster-than-speedtest-net.76129

 

[L&LD]

In my reply above, I meant, by extension, LAN/WAN too.

I am not seeing the issue in my setup with 2x RT-AX86Us.

 

[Grayson73]

Are you saying you're having fast Wi-Fi upload speeds? If so, we'd love to see your setup in the other thread.

 

[L&LD]

386.1 Final 2x RT-AX86Us 2.5GbE Backhaul

Nothing has changed appreciably on RMerlin 386.4 Beta 2 from the above (other than testing variations).

 

[whitey019]

L&LD: Do you change any of the settings on the Fast.com speed tests? Specifically, parallel connections and test duration?

 

[Grayson73]

386.1 Final 2x RT-AX86Us 2.5GbE Backhaul

Nothing has changed appreciably on RMerlin 386.4 Beta 2 from the above (other than testing variations).

So we have to flash a custom firmware in order to fix the wi-fi upload speed issue, since Asus won't?

 

[whitey019]

Does Merlin's firmware fix the issue?