Acer Connect Enduro M3 – extremely slow download when sharing internet with router Beryl AX

mszyplinski
mszyplinski Member Posts: 4 New User

Hi everyone,

I'm having an issue with my Acer Connect Enduro M3 and I wonder if anyone else has experienced the same.

I bought this router primarily to use it as a mobile internet source for my travel router – a GL.iNet Beryl AX. However, there's a major issue:

  • When the Beryl AX connects to the Acer (either via Wi-Fi or USB tethering), upload speeds are fine, but download speeds drop to ~1 Mbps, sometimes even lower.
  • I’ve tested this in multiple locations with good LTE/5G signal.
  • When I use any other internet source (phone hotspot, regular Wi-Fi, other LTE routers), the Beryl AX performs perfectly – so this is not an issue with the Beryl router.
  • The Acer M3 itself works well when sharing internet directly to a phone or laptop – only when another router is the client, the problem appears.

I’ve already:

  • Updated the firmware to the latest version
  • Performed multiple factory resets
  • Tried both USB and Wi-Fi modes

Has anyone used the Acer M3 in a similar way with a travel router or repeater? Any ideas for solving this?

Thanks in advance for your help!

Answers

  • StevenGen
    StevenGen ACE Posts: 13,919 Trailblazer

    The Acer Connect Enduro M3 is probably not compatible with your GL.iNet Beryl AX router, that is why and the only thing that I can put that down to. Use only the Acer Connect Enduro M3 5G Mobile Wi-Fi on its own to connect to the Wi-Fi network.

    If this answers your question and solved your query please "Click on Yes" or "Click on Like" if you find my answer useful👍

  • mszyplinski
    mszyplinski Member Posts: 4 New User

    Thanks again for the reply – I really appreciate you taking the time to respond.

    I’m open to the idea that USB tethering may have limitations or might not be fully compatible with all client devices – even though it’s interesting that upload works fine, which makes it harder to blame the hardware alone. But okay, let’s set USB tethering aside for now.

    What I really don’t understand is this:

    • The Wi-Fi network shared by the Acer Connect Enduro M3 works fine with phones, tablets, and laptops.
    • But when I try to use that Wi-Fi as a WAN source for another router (GL.iNet Beryl AX in this case), download speeds drop to 1 Mbps or less, while upload stays normal.
    • The same setup works perfectly with any other mobile hotspot, home router, or even tethered phone.

    So if both routers are using standard Wi-Fi protocols, and the Beryl AX can successfully connect and authenticate, there’s no logical reason it shouldn’t work – unless something in the M3 firmware is causing the issue. Possibly a problem in routing, NAT, or QoS.

    Also, with all due respect, the suggestion to “just use the Acer M3 directly” and avoid using a second router isn’t really a solution – it’s more like a workaround. It doesn’t solve the underlying problem. Travel routers like the Beryl AX are used by many people who want to:

    • Share VPN across all devices,
    • Extend limited Wi-Fi range,
    • Add firewall and DNS-level protection,
    • Connect wired devices (via Ethernet port),
    • Maintain consistent settings between locations.

    That’s exactly why I bought the Acer M3 – and it should support this use case.

    I've reported this to Acer support already, but if anyone in the community has ideas, workarounds, or technical insights – I’m all ears.

    Thanks again!