RT-AX55 with really bad wired upload speeds

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New Around Here
Hi all,

This is my first post here.

I own the router model above, it is running firmware version and it is operating in wireless router mode.


I started noticing really slow upload speeds when connected to the router over ethernet.

As for using the same measuring standard, I am using the speed test from Chromium on my Linux Mint laptop.

My broadband is with Virgin Media in Ireland and I have 250 Mbps download and 25 Mbps upload.

This is the typical result I get if connected directly to the ISP box over ethernet.


On the ASUS router over WiFi, I get this:


I am in the same room as the router and it is behind the TV, about 1.8 meters (6 feet) away. Not fantastic download speed, but nominal upload.

And, connected to the RT-AX55 over ethernet, using the same cable that I connected to the ISP box earlier I get this:


There is something really wrong here!

I understand there is no Asuswrt-merlin does not have support for my router.

I will attempt a Factory Reset later tonight, but has anyone seen this behaviour before? Any ideas I could try before that?

Thanks in advance,


New Around Here
I have opened a support ticket with ASUS via email and called them. The first level service said he himself has escalated the issue and asked whether I was on the latest firmware and had done a factory reset. It is now a waiting game...

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