Slow Wifi on Xbox One X with AX11000 behind an 1Gbps AT&T Fiber Line

[Mutilat1on]

I have looked far and wide for an answer to this issue and Microsoft Support no longer answers questions for the One X.

I have both an Xbox Series X and an Xbox One X. My issue is that the Xbox One X's Download speed and Upload speed are absolutely horrid. 25.97 Mbps Down/36.53 Mbps Up. It is wirelessly connected as I am unable to hardwire it due to location issues. I know and understand that wifi is not the way to go, but it is my wife's and she doesn't play any lag-issue games. Prior to about 3 months ago, I was getting well over 100Mbps Down/Up wirelessly with it. It now will not go close to even 30 Mbps.

My setup:
ARRIS BGW210-700 gateway (1Gbps Fiber):
WiFi off
IP Passthrough enabled
Allocation Mode: Passthrough
Passthrough Mode: DHCPS-fixed
All Firewall settings are off.

Connected to a ROG GT-AX11000 Router:
Firewall: Standard
Game Boost: Enabled
QoS: Gaming

Both the Series X and One X are set to gaming.

I have turned QoS off entirely and speeds dropped to 17.72 Mbps Down/23.75 Mbps Up

Gear Accelerator: On for Both the Series X & the One X
Open NAT: Profiles created for Both the Series X & One X

Port 88 (UDP)
Port 3074 (UDP and TCP)
Port 53 (UDP and TCP)
Port 80 (TCP)
Port 500 (UDP)
Port 3544 (UDP)
Port 4500 (UDP)

Full Cone NAT
Smart Connect: Enabled
Wireless Mode: Auto (No other Options)
802.11ax/Wifi 6 Mode: Enable
WiFi Agile Multiband: Enabled
Channel Bandwidth: I have tried every configuration from 20MHz to 160MHz and even 20/40/60/80/160MHz
Control Channel: I use InSSIDer and checked all channels, there is no overlap, in fact, our neighbors are so far away their wifi barely appears.
Multi-User MIMO: Enabled
OFDMA/802.11ax MU-MIMO: DL/UL OFDMA + MU-MIMO
IPv4 DNS: 1.1.1.1; 1.0.0.1
IPv6 DNS: 2606:4700:4700::1111; 2606:4700:4700::1001
DMZ: I even put it in a DMZ and there was no change.

I've even verified that it is connecting to the 5G band.
Short of Factory Resetting the Router and starting from scratch, I have no idea where I have gone wrong.

Xbox One X:
Packet Loss: 0%
MTU: 1480
Latency: 32 ms
Wireless Strength: 100%

I did a reset on the One X, then did a full Factory Reset on it. No change in wifi speeds. The issue has to be the Router. But no other devices in the house are experiencing a slowdown.

[Saltgrass]

Might be software installed or the drivers for the Wi-Fi. Do you know what Wi-Fi card the xBox One X uses?

You have tried the other radios on the AX11000?

You could take your Wife's xBox to a place closer to the router to get a better signal, just for testing. The other xBox is performing normally?

Has it always been like this or was there some Win 10 update/build change which might be involved?

Any Bios updates for the xBoxes? I am not familiar with the xBox line so not sure how old they are.

[Mutilat1on]

Might be software installed or the drivers for the Wi-Fi. Do you know what Wi-Fi card the xBox One X uses?

• The Xbox One X has a custom wifi card. Drivers are dependant on system updates.
  

You have tried the other radios on the AX11000?

• Yes, it's currently connected to one of the 5GHz bands
  

You could take your Wife's xBox to a place closer to the router to get a better signal, just for testing. The other xBox is performing normally?

• It is within eyesight of the router and has 100% signal.
  

Has it always been like this or was there some Win 10 update/build change which might be involved?

• It just started doing this in June or July. Prior to that it was getting well over 100Mbps.
  

Any Bios updates for the xBoxes? I am not familiar with the xBox line so not sure how old they are.

• All system updates are from the same source. There is no BIOS that is accessable.
  

[Indigian]

So far for me I've found that the FW's for the AX11000 are crashable,constantly crashable.
Until I was pointed to a beta,which hasn't crashed at all yet.
Tried the latest - 3.0.0.4.386.45898 crashed a few times within hrs

[Mutilat1on]

I've never experienced a single crash...like period. You should return it cause yours is definitely faulty.

[Indigian]

Mutilat1on wrote:
I've never experienced a single crash...like period. You should return it cause yours is definitely faulty.

yet working fine with a beta FW...........

did you try the beta to see if it fixed your problem?