Intel Wi-Fi AX200


"in my case I set different SSIDs for the different radios and frequencies."

In essence just press the disconnect button in Windows 11 dialogues for the 2.4 GHz SSID, as you use different ones easy to do.

Settings > Home > WiFi > Show available networks > Disconnect the SSID for 2.4 GHz. Leaving the SSID for 5 GHz connected.

You can still connect to Printers and other devices that are 2.4 GHz single band, the WAP/router sorts that out.

The Wireless Card (Intel AX211) properties on mine are set to 1. No preference.

This makes it only connect with 5 GHz to the WAP(router).

It is not a fault as a lot of Routers can use both 2.4 and 5 GHz at the same time. Likewise a slightly lower than max Wireless signal strength won't affect speed much.

"Why does my Intel Wi-Fi AX200 keep switching from 5 Ghz to 2.4 Ghz on Windows 11 23H2"
How do you know that ? maybe it is using both.
 

My Computer

System One

  • OS
    Windows 11
"in my case I set different SSIDs for the different radios and frequencies."

In essence just press the disconnect button in Windows 11 dialogues for the 2.4 GHz SSID, as you use different ones easy to do.

Settings > Home > WiFi > Show available networks > Disconnect the SSID for 2.4 GHz. Leaving the SSID for 5 GHz connected.

You can still connect to Printers and other devices that are 2.4 GHz single band, the WAP/router sorts that out.

The Wireless Card (Intel AX211) properties on mine are set to 1. No preference.

This makes it only connect with 5 GHz to the WAP(router).

It is not a fault as a lot of Routers can use both 2.4 and 5 GHz at the same time. Likewise a slightly lower than max Wireless signal strength won't affect speed much.

"Why does my Intel Wi-Fi AX200 keep switching from 5 Ghz to 2.4 Ghz on Windows 11 23H2"
How do you know that ? maybe it is using both.
His router doesn't have enough midichlorians to support different SSIDs.
 

My Computers

System One System Two

  • OS
    11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Asus TUF Gaming F16 (2024)
    CPU
    i7 13650HX
    Memory
    16GB DDR5
    Graphics Card(s)
    GeForce RTX 4060 Mobile
    Sound Card
    Eastern Electric MiniMax DAC Supreme; Emotiva UMC-200; Astell & Kern AK240
    Monitor(s) Displays
    Sony Bravia XR-55X90J
    Screen Resolution
    3840×2160
    Hard Drives
    512GB SSD internal
    37TB external
    PSU
    Li-ion
    Cooling
    2× Arc Flow Fans, 4× exhaust vents, 5× heatpipes
    Keyboard
    Logitech K800
    Mouse
    Logitech G402
    Internet Speed
    20Mbit/s up, 250Mbit/s down
    Browser
    FF
  • Operating System
    11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Medion S15450
    CPU
    i5 1135G7
    Memory
    16GB DDR4
    Graphics card(s)
    Intel Iris Xe
    Sound Card
    Eastern Electric MiniMax DAC Supreme; Emotiva UMC-200; Astell & Kern AK240
    Monitor(s) Displays
    Sony Bravia XR-55X90J
    Screen Resolution
    3840×2160
    Hard Drives
    2TB SSD internal
    37TB external
    PSU
    Li-ion
    Mouse
    Logitech G402
    Keyboard
    Logitech K800
    Internet Speed
    20Mbit/s up, 250Mbit/s down
    Browser
    FF
My router is Technicolor CGM4331COM modem/router combo rented from Xfinity.
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Digital Storm
    CPU
    Intel Core i9 9900K 3.8GHz
    Motherboard
    ASUS Z390 Maximus XI Hero Wi-Fi
    Memory
    16GB DDR4 2666MHz
    Graphics Card(s)
    NVIDIA RTX 2060
    Sound Card
    Realtek Onboard
    Monitor(s) Displays
    Acer XF243Y M3
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 970 EVO Plus 2TB
    PSU
    850W
    Case
    Cooler Master HAF-932
    Cooling
    Air
    Keyboard
    Razer DeathStalker V2 Pro
    Mouse
    Razer Cobra Pro
    Internet Speed
    Gigabit
    Browser
    Microsoft Edge
    Antivirus
    Windows Security
The simplest solution for cases where the router cannot split the ssids is to connect a second router that can split ssids as follows.

1) give 2nd router a static ip address on same subnet as main router

2) disable dhcp on second router

3) set up wifi ssids on 2nd router with unique ssids for 2.4 ghz and 5 ghz (disable 2.4 ghz optional)

4) connect routers with a cat6 or higher ethernet cable.

5) So connect pc to 2nd router ssid, everything else to 1st router ssids.
 

My Computer

System One

  • OS
    Windows 10 Pro + others in VHDs
    Computer type
    Laptop
    Manufacturer/Model
    ASUS Vivobook 14
    CPU
    I7
    Motherboard
    Yep, Laptop has one.
    Memory
    16 GB
    Graphics Card(s)
    Integrated Intel Iris XE
    Sound Card
    Realtek built in
    Monitor(s) Displays
    N/A
    Screen Resolution
    1920x1080
    Hard Drives
    1 TB Optane NVME SSD, 1 TB NVME SSD
    PSU
    Yep, got one
    Case
    Yep, got one
    Cooling
    Stella Artois
    Keyboard
    Built in
    Mouse
    Bluetooth , wired
    Internet Speed
    72 Mb/s :-(
    Browser
    Edge mostly
    Antivirus
    Defender
    Other Info
    TPM 2.0
I had a lot of issues and interference when I added a Netgear router set up as an access point to my network. My main router is TP Link Archer. Everything finally fell into place and worked like it was supposed to when I set up each band of each router to broadcast its own name.
Every device I have will automatically connect to whichever of the 4 SSIDs I want it to. From what you guys are saying, it seems sometimes, the old stuff handles the traffic better than the new, huh? I've never dealt with any mesh setup yet and as old as I am, I probably never will.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 22631.3737
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 7080
    CPU
    i9-10900 10 core 20 threads
    Motherboard
    DELL 0J37VM
    Memory
    32 gb
    Graphics Card(s)
    none-Intel UHD Graphics 630
    Sound Card
    Integrated Realtek
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    1tb Solidigm m.2 nvme+256gb SKHynix m.2 nvme /External +512gb Samsung m.2 sata+1tb Kingston m2.nvme
    PSU
    500w
    Case
    MT
    Cooling
    Dell Premium
    Keyboard
    Logitech wired
    Mouse
    Logitech wireless
    Internet Speed
    so slow I'm too embarrassed to tell
    Browser
    Firefox
    Antivirus
    Defender+MWB Premium
  • Operating System
    Windows 10 Pro 22H2 19045.3930
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 9020
    CPU
    i7-4770
    Memory
    24 gb
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    256 gb Toshiba BG4 M.2 NVE SSB and 1 tb hdd
    PSU
    500w
    Case
    MT
    Cooling
    Dell factory
    Mouse
    Logitech wireless
    Keyboard
    Logitech wired
    Internet Speed
    still not telling
    Browser
    Firefox
    Antivirus
    Defender+MWB Premium
I use my Asus AiMesh 2.0 system in AP (Access Point) mode. My main router is the built-in router function of my gateway, or HGW (Home Gateway) that is rented from the ISP. On the cardboard packaging, the ISP also refers to this specific HGW as a "wireless modem", it's a typical all-in-one device that combines both a cable modem and a WiFi router (that also has two landline phone jacks) into just a single device. I have disabled the WiFi of the HGW, which was enabled by default in the ISP settings. The main benefits/improvements of adding the mesh were the typical whole-house range/coverage with strong performance and signal stability in every corner also including outside in the garden space, smoother roaming compared to alternative solutions and extra connectivity features, because, despite that I use it in AP mode, each node is still a true WiFi router, i.e., with five Gigabit Ethernet ports on each and a decent performing USB3 port, also on each.

The option to choose wired backhaul (which is what I use) makes this particular WiFi 6 mesh system I have (Asus RT-AX92U 2-Pack) perform quasi on par with a traditional-old Gigabit Ethernet home network (minus the network cable dangling off of the laptop or phone). Cat 6 cabling isn't a strict necessity with such a (wired backhaul) setup, as properly shielded Cat 5e doesn't slow down Gigabit Ethernet connections more than just a tiny little bit. It means that, if you already have installed good Cat 5e cabling, like, many years ago maybe, and replacing the cabling would require you to break apart and rebuild/redecorate your home interior when you don't want to (yet), then no need to worry. With the Intel AX200/AX201 it fetches way up and above 900 Mb/s on average and peaks at ~960 Mb/s, no problemo... IME the old RT-AX92U 2-Pack still has plenty of midichlorians left so, it's not completely obsolete.

porg-main_16933d3b.jpeg
 

My Computers

System One System Two

  • OS
    11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Asus TUF Gaming F16 (2024)
    CPU
    i7 13650HX
    Memory
    16GB DDR5
    Graphics Card(s)
    GeForce RTX 4060 Mobile
    Sound Card
    Eastern Electric MiniMax DAC Supreme; Emotiva UMC-200; Astell & Kern AK240
    Monitor(s) Displays
    Sony Bravia XR-55X90J
    Screen Resolution
    3840×2160
    Hard Drives
    512GB SSD internal
    37TB external
    PSU
    Li-ion
    Cooling
    2× Arc Flow Fans, 4× exhaust vents, 5× heatpipes
    Keyboard
    Logitech K800
    Mouse
    Logitech G402
    Internet Speed
    20Mbit/s up, 250Mbit/s down
    Browser
    FF
  • Operating System
    11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Medion S15450
    CPU
    i5 1135G7
    Memory
    16GB DDR4
    Graphics card(s)
    Intel Iris Xe
    Sound Card
    Eastern Electric MiniMax DAC Supreme; Emotiva UMC-200; Astell & Kern AK240
    Monitor(s) Displays
    Sony Bravia XR-55X90J
    Screen Resolution
    3840×2160
    Hard Drives
    2TB SSD internal
    37TB external
    PSU
    Li-ion
    Mouse
    Logitech G402
    Keyboard
    Logitech K800
    Internet Speed
    20Mbit/s up, 250Mbit/s down
    Browser
    FF
Why does my Windows 11 23H2 computer sometimes only connect at 2.4 GHz instead of 5 GHz? The 2.4 GHz band is very slow and limits download speed to about 50 mbps or less. The same SSID is used for both 2.4 GHz and 5 GHz bands.

SSID: Home
Protocol: Wi-Fi 6 (802.11ax)
Security type: WPA2-Personal
Manufacturer: Intel Corporation
Description: Intel(R) Wi-Fi 6 AX200 160MHz
Driver version: 23.10.0.8
Network band: 2.4 GHz
Network channel: 1
Link speed (Receive/Transmit): 115/146 (Mbps)
IPv6 address: 2601:88:200:5d50::b0a9
2601:88:200:5d50:3f7e:7a51:cf0a:fb28
Link-local IPv6 address: fe80::d6e9:edc7:f45c:5525%14
IPv6 DNS servers: 2001:558:feed::1 (Unencrypted)
2001:558:feed::2 (Unencrypted)
IPv4 address: 10.0.0.200
IPv4 DNS servers: 75.75.75.75 (Unencrypted)
75.75.76.76 (Unencrypted)
Physical address (MAC): 14-F6-D8-9C-41-BD
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Digital Storm
    CPU
    Intel Core i9 9900K 3.8GHz
    Motherboard
    ASUS Z390 Maximus XI Hero Wi-Fi
    Memory
    16GB DDR4 2666MHz
    Graphics Card(s)
    NVIDIA RTX 2060
    Sound Card
    Realtek Onboard
    Monitor(s) Displays
    Acer XF243Y M3
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 970 EVO Plus 2TB
    PSU
    850W
    Case
    Cooler Master HAF-932
    Cooling
    Air
    Keyboard
    Razer DeathStalker V2 Pro
    Mouse
    Razer Cobra Pro
    Internet Speed
    Gigabit
    Browser
    Microsoft Edge
    Antivirus
    Windows Security
Why does my Windows 11 23H2 computer sometimes only connect at 2.4 GHz instead of 5 GHz?
Open device manager as Administrator (devmgmt.msc), expand "Network Adapters" and double click your wireless adapter to open properties.
Under advanced tab find "Bandwidth" option (hopefully it's called so), and then change from Auto to 20mhz or 2.4
 

My Computer

System One

  • OS
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI / MS-7B29
    CPU
    Intel i3 8100 @3.6Ghz
    Motherboard
    H310M PRO-VDH (MS-7B29)
    Memory
    1 x 16GB DDR4 @2400 MHz
    Graphics Card(s)
    Nvidia GeForce GT 1030 2GB SDDR4
    Sound Card
    Realtek VEN_10EC&DEV_0887 / NVIDIA VEN_10DE&DEV_0081
    Monitor(s) Displays
    Acer V226HQL
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD 500 GB Crucial MX500 / HDD 1 TB TOSHIBA DT01ACA100
    PSU
    ATX, details unknown
    Case
    Everest 551B
    Cooling
    details unknown
    Keyboard
    Mechanical Gaming Hydra R7 - Rampage
    Mouse
    Logitech G703
    Internet Speed
    Down: 28Mbps / Up: 19Mbps
    Browser
    Microsoft Edge
    Antivirus
    Microsoft Defender Antivirus
    Other Info
    Bluetooth: TP Link 5.0 Nano USB adapter UB500
    WLAN: D-Link 150 Pico USB adapter, N standard
    Web camera: Logitech C270 HD 720p @30fps
    Microphone: Trust MICO, model 23790
When I reboot it connects at 5 GHz initially but after a while it changes to 2.4 GHz using default settings.
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Digital Storm
    CPU
    Intel Core i9 9900K 3.8GHz
    Motherboard
    ASUS Z390 Maximus XI Hero Wi-Fi
    Memory
    16GB DDR4 2666MHz
    Graphics Card(s)
    NVIDIA RTX 2060
    Sound Card
    Realtek Onboard
    Monitor(s) Displays
    Acer XF243Y M3
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 970 EVO Plus 2TB
    PSU
    850W
    Case
    Cooler Master HAF-932
    Cooling
    Air
    Keyboard
    Razer DeathStalker V2 Pro
    Mouse
    Razer Cobra Pro
    Internet Speed
    Gigabit
    Browser
    Microsoft Edge
    Antivirus
    Windows Security
@Keith Weisshar

What is the make and model of your wifi router? Can you separate the 2.4GHz and the 5GHz into two wifi networks with unique names?
If your computer switches to 2.4GHz, it is because the 5GHz signal is too weak. Can you move the router and computer closer together? Or use a Powerline repeater?
 

My Computers

System One System Two

  • OS
    11 Pro 23H2 OS build 22631.3672
    Computer type
    Laptop
    Manufacturer/Model
    Acer Swift SF114-34
    CPU
    Pentium Silver N6000 1.10GHz
    Memory
    4GB
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD
    Cooling
    fanless
    Internet Speed
    13Mbps
    Browser
    Brave, Edge or Firefox
    Antivirus
    Webroot Secure Anywhere
    Other Info
    System 3

    ASUS T100TA Transformer
    Processor Intel Atom Z3740 @ 1.33GHz
    Installed RAM 2.00 GB (1.89 GB usable)
    System type 32-bit operating system, x64-based processor

    Edition Windows 10 Home
    Version 22H2 build 19045.3570
  • Operating System
    Windows 11 Pro 23H2 22631.2506
    Computer type
    Laptop
    Manufacturer/Model
    HP Mini 210-1090NR PC (bought in late 2009!)
    CPU
    Atom N450 1.66GHz
    Memory
    2GB
When I reboot it connects at 5 GHz initially but after a while it changes to 2.4 GHz using default settings.
Sorry for my mistake in previous post, I should have said to set your adapter to operate on 5ghz band.
 

My Computer

System One

  • OS
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI / MS-7B29
    CPU
    Intel i3 8100 @3.6Ghz
    Motherboard
    H310M PRO-VDH (MS-7B29)
    Memory
    1 x 16GB DDR4 @2400 MHz
    Graphics Card(s)
    Nvidia GeForce GT 1030 2GB SDDR4
    Sound Card
    Realtek VEN_10EC&DEV_0887 / NVIDIA VEN_10DE&DEV_0081
    Monitor(s) Displays
    Acer V226HQL
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD 500 GB Crucial MX500 / HDD 1 TB TOSHIBA DT01ACA100
    PSU
    ATX, details unknown
    Case
    Everest 551B
    Cooling
    details unknown
    Keyboard
    Mechanical Gaming Hydra R7 - Rampage
    Mouse
    Logitech G703
    Internet Speed
    Down: 28Mbps / Up: 19Mbps
    Browser
    Microsoft Edge
    Antivirus
    Microsoft Defender Antivirus
    Other Info
    Bluetooth: TP Link 5.0 Nano USB adapter UB500
    WLAN: D-Link 150 Pico USB adapter, N standard
    Web camera: Logitech C270 HD 720p @30fps
    Microphone: Trust MICO, model 23790
My iPad still remains at 5 GHz but the computer keeps switching to 2.4 Ghz. This problem started occurring after 23H2.
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Digital Storm
    CPU
    Intel Core i9 9900K 3.8GHz
    Motherboard
    ASUS Z390 Maximus XI Hero Wi-Fi
    Memory
    16GB DDR4 2666MHz
    Graphics Card(s)
    NVIDIA RTX 2060
    Sound Card
    Realtek Onboard
    Monitor(s) Displays
    Acer XF243Y M3
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 970 EVO Plus 2TB
    PSU
    850W
    Case
    Cooler Master HAF-932
    Cooling
    Air
    Keyboard
    Razer DeathStalker V2 Pro
    Mouse
    Razer Cobra Pro
    Internet Speed
    Gigabit
    Browser
    Microsoft Edge
    Antivirus
    Windows Security
My iPad still remains at 5 GHz but the computer keeps switching to 2.4 Ghz. This problem started occurring after 23H2.
You have set bandwidth option in adapter properties to 5ghz and it's still switching to 2.4?
 

My Computer

System One

  • OS
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI / MS-7B29
    CPU
    Intel i3 8100 @3.6Ghz
    Motherboard
    H310M PRO-VDH (MS-7B29)
    Memory
    1 x 16GB DDR4 @2400 MHz
    Graphics Card(s)
    Nvidia GeForce GT 1030 2GB SDDR4
    Sound Card
    Realtek VEN_10EC&DEV_0887 / NVIDIA VEN_10DE&DEV_0081
    Monitor(s) Displays
    Acer V226HQL
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD 500 GB Crucial MX500 / HDD 1 TB TOSHIBA DT01ACA100
    PSU
    ATX, details unknown
    Case
    Everest 551B
    Cooling
    details unknown
    Keyboard
    Mechanical Gaming Hydra R7 - Rampage
    Mouse
    Logitech G703
    Internet Speed
    Down: 28Mbps / Up: 19Mbps
    Browser
    Microsoft Edge
    Antivirus
    Microsoft Defender Antivirus
    Other Info
    Bluetooth: TP Link 5.0 Nano USB adapter UB500
    WLAN: D-Link 150 Pico USB adapter, N standard
    Web camera: Logitech C270 HD 720p @30fps
    Microphone: Trust MICO, model 23790
I tried preferred band to 5 GHz but it's still switching to 2.4 GHz. At 2.4 GHz it would take many hours to download and install large games such as Forspoken which is over 100 GB. The only way to lock in 5 GHz is to use 802.11ac mode instead of 802.11ax mode.
 
Last edited:

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Digital Storm
    CPU
    Intel Core i9 9900K 3.8GHz
    Motherboard
    ASUS Z390 Maximus XI Hero Wi-Fi
    Memory
    16GB DDR4 2666MHz
    Graphics Card(s)
    NVIDIA RTX 2060
    Sound Card
    Realtek Onboard
    Monitor(s) Displays
    Acer XF243Y M3
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 970 EVO Plus 2TB
    PSU
    850W
    Case
    Cooler Master HAF-932
    Cooling
    Air
    Keyboard
    Razer DeathStalker V2 Pro
    Mouse
    Razer Cobra Pro
    Internet Speed
    Gigabit
    Browser
    Microsoft Edge
    Antivirus
    Windows Security
In your wireless adapter properties -advanced tab change wireless mode to IEEE 802.11an/ac. Will be a similar setting to this,

1703150564445.png
 

My Computers

System One System Two

  • OS
    Win 11 Home & 🐥.
    Computer type
    Laptop
    Manufacturer/Model
    ACER Nitro AN16-41
    CPU
    AMD Ryzen™ 7 7735HS Processor 3.2Ghz
    Motherboard
    RB Sierra_PEH (FP7)
    Memory
    32 GB DDR5 4800MHz
    Graphics Card(s)
    NVIDIA GeForce RTX 4060 8GB GDDR6
    Monitor(s) Displays
    16" QHD+ 165Hz 16:10 IPS Technology
    Screen Resolution
    1920 X 1200
    Hard Drives
    Samsung 990 PRO 2TB
    PSU
    330 Watts
    Mouse
    Lenovo Bluetooth.
    Internet Speed
    500 Mbps
    Browser
    Edge
    Antivirus
    Defender
  • Operating System
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    ACER NITRO
    CPU
    AMD Ryzen 7 5800H / 3.2 GHz
    Motherboard
    CZ Scala_CAS (FP6)
    Memory
    32 GB DDR4 SDRAM 3200 MHz
    Graphics card(s)
    NVIDIA GeForce RTX 3060 6 GB GDDR6 SDRAM
    Sound Card
    Realtek Audio. NVIDIA High Definition Audio
    Monitor(s) Displays
    15.6" LED backlight 1920 x 1080 (Full HD) 144 Hz
    Screen Resolution
    1920 x 1080 (Full HD)
    Hard Drives
    Samsung 970 Evo Plus 2TB NVMe M.2
    PSU
    180 Watt, 19.5 V
    Mouse
    Lenovo Bluetooth
    Internet Speed
    500 Mbps
    Browser
    Edge
    Antivirus
    Defender
I tried preferred band to 5 GHz but it's still switching to 2.4 GHz. At 2.4 GHz it would take many hours to download and install large games such as Forspoken which is over 100 GB. The only way to lock in 5 GHz is to use 802.11ac mode instead of 802.11ax mode.
Since it's forcing you to use 2.4GHz you can see if there is channel interference with other wi-fi's in your hood.

Press start button, type CMD, right click on Command Prompt and open CMD as Administrator.
copy\paste or type the following command into console and press enter:

netsh wlan show networks mode=Bssid

In the output take a look at your wi-fi name and note the "Channel" value.
Then in the output also see if other wi-fi networks use channel that is same as yours or up to 2 values away from it.

if other networks are close or on same channel as your wi-fi you want to change channel to some other value in your router, one that is as far away from other wi-fi's as possible.
 

My Computer

System One

  • OS
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI / MS-7B29
    CPU
    Intel i3 8100 @3.6Ghz
    Motherboard
    H310M PRO-VDH (MS-7B29)
    Memory
    1 x 16GB DDR4 @2400 MHz
    Graphics Card(s)
    Nvidia GeForce GT 1030 2GB SDDR4
    Sound Card
    Realtek VEN_10EC&DEV_0887 / NVIDIA VEN_10DE&DEV_0081
    Monitor(s) Displays
    Acer V226HQL
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD 500 GB Crucial MX500 / HDD 1 TB TOSHIBA DT01ACA100
    PSU
    ATX, details unknown
    Case
    Everest 551B
    Cooling
    details unknown
    Keyboard
    Mechanical Gaming Hydra R7 - Rampage
    Mouse
    Logitech G703
    Internet Speed
    Down: 28Mbps / Up: 19Mbps
    Browser
    Microsoft Edge
    Antivirus
    Microsoft Defender Antivirus
    Other Info
    Bluetooth: TP Link 5.0 Nano USB adapter UB500
    WLAN: D-Link 150 Pico USB adapter, N standard
    Web camera: Logitech C270 HD 720p @30fps
    Microphone: Trust MICO, model 23790
Maybe you missed my earlier post but I had similar problems when I was with BT as their router would not allow ssids to be separated.

I solved this by simply connecting a second router (which would allow 2 ssids) to ISP router via an ethernet cable.

Then I connected pc to 5GHZ band on second router - problem solved.
 

My Computer

System One

  • OS
    Windows 10 Pro + others in VHDs
    Computer type
    Laptop
    Manufacturer/Model
    ASUS Vivobook 14
    CPU
    I7
    Motherboard
    Yep, Laptop has one.
    Memory
    16 GB
    Graphics Card(s)
    Integrated Intel Iris XE
    Sound Card
    Realtek built in
    Monitor(s) Displays
    N/A
    Screen Resolution
    1920x1080
    Hard Drives
    1 TB Optane NVME SSD, 1 TB NVME SSD
    PSU
    Yep, got one
    Case
    Yep, got one
    Cooling
    Stella Artois
    Keyboard
    Built in
    Mouse
    Bluetooth , wired
    Internet Speed
    72 Mb/s :-(
    Browser
    Edge mostly
    Antivirus
    Defender
    Other Info
    TPM 2.0
Maybe you missed my earlier post but I had similar problems when I was with BT as their router would not allow ssids to be separated.

I solved this by simply connecting a second router (which would allow 2 ssids) to ISP router via an ethernet cable.

Then I connected pc to 5GHZ band on second router - problem solved.
Which BT router was it? I've had two models and they both allowed the splitting of bands!
 

My Computers

System One System Two

  • OS
    11 Pro 23H2 OS build 22631.3672
    Computer type
    Laptop
    Manufacturer/Model
    Acer Swift SF114-34
    CPU
    Pentium Silver N6000 1.10GHz
    Memory
    4GB
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD
    Cooling
    fanless
    Internet Speed
    13Mbps
    Browser
    Brave, Edge or Firefox
    Antivirus
    Webroot Secure Anywhere
    Other Info
    System 3

    ASUS T100TA Transformer
    Processor Intel Atom Z3740 @ 1.33GHz
    Installed RAM 2.00 GB (1.89 GB usable)
    System type 32-bit operating system, x64-based processor

    Edition Windows 10 Home
    Version 22H2 build 19045.3570
  • Operating System
    Windows 11 Pro 23H2 22631.2506
    Computer type
    Laptop
    Manufacturer/Model
    HP Mini 210-1090NR PC (bought in late 2009!)
    CPU
    Atom N450 1.66GHz
    Memory
    2GB
Which BT router was it? I've had two models and they both allowed the splitting of band
Homehub 6 - had a firmware update that did not alllow splitting.
Many complained on BT isp site.
 

My Computer

System One

  • OS
    Windows 10 Pro + others in VHDs
    Computer type
    Laptop
    Manufacturer/Model
    ASUS Vivobook 14
    CPU
    I7
    Motherboard
    Yep, Laptop has one.
    Memory
    16 GB
    Graphics Card(s)
    Integrated Intel Iris XE
    Sound Card
    Realtek built in
    Monitor(s) Displays
    N/A
    Screen Resolution
    1920x1080
    Hard Drives
    1 TB Optane NVME SSD, 1 TB NVME SSD
    PSU
    Yep, got one
    Case
    Yep, got one
    Cooling
    Stella Artois
    Keyboard
    Built in
    Mouse
    Bluetooth , wired
    Internet Speed
    72 Mb/s :-(
    Browser
    Edge mostly
    Antivirus
    Defender
    Other Info
    TPM 2.0
I tried preferred band to 5 GHz but it's still switching to 2.4 GHz. At 2.4 GHz it would take many hours to download and install large games such as Forspoken which is over 100 GB. The only way to lock in 5 GHz is to use 802.11ac mode instead of 802.11ax mode.
Technicolor CGM4331COM seems to auto choose the best band. So fiddling with the settings for the Wireless Card won't work.
You may be able to organise a better 5 GHz signal over the 2.4 GHz by aerial positioning and using an App like WiFi Analyzer to monitor the levels.

Another solution is either get a different compatible Modem/Router/WAP, or add in a second Router/WAP with no auto-switching and separate SSIDs for each band.

Nothing really to do with Windows updates or the Wireless Cards. It is basically the WAP feature of auto-switching bands.

The Wireless Card (AX211) in my laptop is set to triple Band 2.4/5/6 GHz but it only connects/uses 5 GHz with a separate SSID.

What is your Internet download speed ?
Depending on that it may not matter much whether you are connected with 2.4 GHz and/or 5 GHz.
If it is say 80 Mbs it does not matter which.
 

My Computer

System One

  • OS
    Windows 11

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