2023 MacBook Pro Internet Connection Issue

How to turn off Wi-Fi 6E mode on your device

For Wi-Fi 6E networks that use a single network name as recommended, if you experience any other issues with your use of the network, you can turn off Wi-Fi 6E mode when connected to that network. Your device will then no longer use that network’s 6GHz band. Use of Wi-Fi 6E on other networks isn't affected.

Mac

1. Choose Apple menu  > System Settings, then click Wi-Fi.
2. Click the Details button next to the name of the Wi-Fi 6E network you're connected to.
3. From the pop-up menu next to Wi-Fi 6E Mode, choose Off. 

from:

Use Wi-Fi 6E networks with Apple devices - Apple Support

hold down the Option key while you click on the Wi-Fi icon on the menuBar. You get a snapshot of current parameters, like this older one. screenshot of transcribe and post the labels and values, and readers can analyze your hardware and network situation.

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another choice on that menu is 'Open Wireless Diagnostics'.

Its initial step is worth doing, but the thing it calls a Report is a HUGE dump of every parameter that could possibly influence your internet connection, and has no human-readable conclusions.

your new M2 computer has made a 160 MHz connection in the 6 GHz band, bypassing any 2.4 GHz and any 5 GHz channels used by your older computers.

From its current location, you have a good signal (RSSI) of -58 dB, where signals with values of -40 dB are "right in top of the Router" and signals of -70 dB or lower suggest "it's time to switch to a different Router".

a transmit rate of 864 M bits sec is very good; and faster than may internet connections.

Number of streaming servers NSS of 2 suggests both of you two antennas are being used together to develop the signal. No disconnected antennas.

What is NOT so good is NOISE level of -84 dB. Expected numbers would be nearer -95 dB. The scale like many of these is logarithmic, and that is a whole lot of noise, OR that channel is already in use by something else in your "network neighborhood", like one of your neighbors' Routers.

What often solves such issues is setting Router channel selection to "Automatic".

Then, when the router wakes up, it listens to what is already present and chooses the channel that is least busy. It is not an accident that debugging procedures all start with, "Cycle the power to your Router..."

If already set to "auto" channel selection, you may need to observe what other channels are in use and manually choose around the ones that are already busy.

You have opened the Apple Airport Base Station Utility. It is extremely useful for administering the (now obsolete) Apple Router.

To change settings in your Router, you need to open a Web Browser and enter the numeric address of the Router, shown in every network pane on connected Macs. Numbers like 192.168.1.0 are common.

You will get the Router's sign-in page.

what make and model is the Router?

There are MANY ways to proceed, and most are not too complicated.

One is to turn off Wi-Fi 6E mode on your Mac and let it revert to the same method all your other Macs are using.

Post back if you want instructions for that.

Is the Mac completely up to date with the latest software updates? If no, you might want to do that first

system settings>general>software update

what make&model Router? They are each different. You may need the manual.

Settings like channel selection under

wireless radio settings are common