What's new

[RT-AX86U Pro] Internet speed on clients

  • SNBForums Code of Conduct

    SNBForums is a community for everyone, no matter what their level of experience.

    Please be tolerant and patient of others, especially newcomers. We are all here to share and learn!

    The rules are simple: Be patient, be nice, be helpful or be gone!


Occasional Visitor
Hi all,

I have a 1000/500 Internet connection. I've recently upgraded from an RT-AC68U to an RT-AX86U Pro, firmware v388.1.

I have noticed that measuring Internet speed from a wired machine measures only ~500/500. I've tested this from a desktop that's connected via a switch, as well as a laptop plugged directly into the router. Both machines were measuring ~1000/500 with RT-AC68U.

The curious thing is that when measuring Internet speed directly from the router (Adaptive QoS -> Internet speed), I do get ~1000/500.

RT-AX86U Pro has Adaptive QoS turned off, as well as Ai Protection. I've replaced the old router directly, no cables were changed, the switch is the same.

Tools -> Sysinfo -> HW Acceleration shows: "Runner: Enabled - Flow Cache: Disabled".

How do I begin to debug this?

Thank you!
Indeed, I did run WireGuard server on the router!

I've disabled it and I'm getting full speeds now, thank you!

Is this WireGuard's or Asus firmware bug/limitation?
from what i know that issue is fixed in the 388.2 alpha 1 version

but dont pin me on that i never used wireguard at all

Latest threads

Sign Up For SNBForums Daily Digest

Get an update of what's new every day delivered to your mailbox. Sign up here!