Slow wifi after a while!!

If you have been through the suggestions already noted and no joy, hold the Option key while clicking the Wi-Fi icon.

Choose Wireless Diagnostics and check any overall suggestions it might make. Do not create a diagnostic report, it is huge and interminable and has no user-readable content -- it is for sending to an Apple Network Engineer when needed.

Next, screenshot or transcribe the operating parameters that appear in that menu when you Option-Wi-FI. Looks like this older one:

Hello sarthak149,

Welcome to Apple Support Communities!

We want to help get your MacBook Pro connecting to your network with the speeds you expect.

Start with these steps to check your network settings:

"Router settings

To ensure that your devices can connect securely and reliably to your network, apply these settings consistently to each Wi-Fi router and access point, and to each band of a dual-band, tri-band, or other multiband router. Before changing the settings, you should take these steps:

• Back up your existing settings, in case you need to restore them.
• Install the latest firmware updates for your router. This is generally done from the app or webpage that you use to administer the router.
• Update the software on your other devices, such as on your Mac and on your iPhone or iPad, to ensure that they have the latest security updates and work best with each other.

After changing the settings, you might need to forget the network on each device that previously joined the network. This ensures that the device uses the router's new settings when rejoining the network."

This Apple Support page has the full details and additional steps to take if the issue continues: Recommended settings for Wi-Fi routers and access points - Apple Support

We hope this helps to get your network and Mac working together to give you the correct speeds.

Cheers!

Try disabling Bluetooth. The M1 MBP seems to have a conflict of somekind with 5Ghz WiFi and Bluetooth.

remove this:

Plugin: ~/Library/Internet Plug-Ins/Folx3Plugin.plugin

¿what is the date of your most recent backup, and by what method?

Grant Bennet-Alder wrote:

They just shut off ALL their Wi-Fi and their problem was solved.

lol yes that's exactly what happened, we all fixed our slow WiFi issues by shutting off WiFi.

No in my case, disabling bluetooth fixed my slow WiFi issues on the 5Ghz network for me. It obviously isn't a spectrum conflict as we 2.4ghz and 5ghz aren't in competition. If there is a software/driver issue or other hardware problem I do not know.

I merely suggested it as simple step to rule out ops specific issue. You're in fact is the least helpful, what do

Grant Bennet-Alder wrote:

¿what is the date of your most recent backup, and by what method?

Could you explain your reasoning for this? Because backups, like bluetooth also don't run on the 5ghz network lol. What does this have to do with anything at all.

Bluetooth uses the same frequencies as 2.4 GHz Wi-Fi, but does frequency-hopping. It could conceivably provide some transient slowdown on 2.4GHz.

It could NOT interfere with 5GHz, unless there is a serious hardware issue.

<< Could you explain your reasoning for this? Because backups, like bluetooth also don't run on the 5ghz network lol. What does this have to do with anything at all. >>

the Etrecheck report noted No active Time machine setup. That COULD mean:

• No backups at all, which is not best practice, especially when starting to encounter issues.

• using some form of Internet backup, which could yield 'slow wifi performance after a while' due to the unexpectedly large volume of information being backed up.

...and that is the reason for my query. It was not related to 5 Ghz or anything specific that I saw except no Time Machine Backup.

The article you posted was not written by someone who understands what they are doing. They just shut off ALL their Wi-Fi and their problem was solved.

Bluetooth does not use 5GHz.

in my opinion, they got relief because they also shut off 2.4GHz band where Bluetooth operates and competes.

I don't know the cause but there are lots of examples of this.

(1) Finally solved my slow wifi speeds on my 2021 MacBook Pro but the solution caused another issue. : macbookpro (reddit.com)