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AIMesh | ASUS RT-AX86U PRO & RT-AX92U Problems

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Hello all,

during my internet search on the topic of network I came across this forum. I hope that here are some professionals who can help me.

To the key points:
We currently live in a 115sqm2 rental apartment without Ethernet. Therefore, I need a wireless solution. The connection point is unfortunately in the living room, but I need a good connection in the office for work and gaming.

My ISP (Telekom) has peering problems, which leads to packet loss with some games like Call Of Duty on the Playstation. After some consultation with support, I came across the Asus RT-AX86U Pro in my search for an alternative router. Awesome device. Then by using Fusion VPN (NordVPN) I had no more packet loss with an acceptable degradation in download rate on the PS5.

Unfortunately, there is only one position to set up the router in the living room, which is why the connection through the thick walls (new building) and underfloor heating is only very weak to the office.

On the Internet I then came across the RT-AX92U, acceptable price and relatively small and discreet.

Set up in the study and everything ran:
Since the second day it gives me only problems, the backhaul connection keeps falling back to 2.4 GHz.
I also found the following article:

Since then I have tried the following:
- Updating firmware on 92U and 86U.
- Install Merlin on 86U (Interestingly, the 92U could only be connected via a lan cable for the initial setup).
- installing older firmware on both devices.
- Merging of the networks 2,4 and 5GhZ
- disconnecting the networks
- Deactivation of WWM APSD & Roaming Assistant in 5GhZ

Whenever I thought I found a solution, since the mesh was running on 5GhZ again after a reboot it dropped back to 2.4 GhZ after some time.

Using the 92U as main is unfortunately not a solution for me as I want to use Fusion VPN (TV & PS5 only).

Can you think of any other solutions?
Maybe the 86U Pro as a repeater and not as mesh?
I would be very happy about any help.

I can still send both devices back. Would you alternatively recommend other devices for my case?

Best regards from the middle of Germany

Translated with www.DeepL.com/Translator (free version)


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If the apartment is wired for TV and there are cable connections near the router and in the bedroom or office use a MOCA adaptor for the backhaul.
One of the routers is a fresh new hardware on initial firmware (AX86U Pro). It's not even available around here to test. The other is an old router with no firmware update from the beginning of 2022 and history of firmware issues (AX92U). Both run different firmware base on top. Backhaul switching to 2.4GHz usually means weak 5GHz signal between the router and the node. This is a rental apartment with no infrastructure modification options. MoCA is not popular in Europe. AiMesh works best with identical routers, but AX86U Pro is expensive and no experience with it. Many issues here.

No idea what will work well in this apartment, unfortunately. I've seen apartments around elevator shafts with zero Wi-Fi penetration. Any hardware recommendation is a guessing game especially from folks living in North America. We have different environment here and different region regulations. The same model routers we know here will perform differently in Europe. I would perhaps keep the AX86U Pro for the features it has, abandon AiMesh ideas and experiment with some Wi-Fi repeaters to cover the dead zones. It's a temporary setup anyway. Or return both and get 2x AX86S, but only if the price is right. At least we know how to deal with current AX86-series issues. Or get much cheaper TP-Link Deco 3-pack and test my luck with it.

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