Very slow Wi-Fi internet after Monterey 12.0.1 update

I had normal, fast speeds on Big Sur OS, but when I updated my early 2015 MBP to Monterey 12.0.1 everything online has come to a halt. I compared with my other MBP early 2020 (on Catalina), and the MacBook Pro on Monterey is getting SIGNIFICANTLY lower speeds than my Catalina MBP. Why would this be happening after new OS update?

7.96 Mbps on Monterey laptop https://imgur.com/a/GTcYHKl

303.76 Mbps on Catalina laptop https://imgur.com/a/CDRkV3W

Posted on Nov 5, 2021 4:26 PM

Top-ranking reply

Kahantext

Level 1

13 points

Posted on Dec 13, 2021 3:59 PM

I was able to work this out with a senior technician at Apple (AFTER updating to 12.1 today).

After doing a million other steps the thing that got my speed back was by going to System Preferences > Network > Location, Edit Location > Hit the plus sign and add a location (I left it "untitled") then hit done.

It took a second for the ethernet/wifi to reconnect and turn green but when they did I ran my speed test which went from 0.09 mbps upload to 50.0 mbps

An interesting point was that the speed was normal (fast) in safe mode before I made these changes.

I hope this helps. Cheers.

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26 replies

Dec 21, 2021 1:22 PM in response to AndreGB

@HighTechDad - I'm gonna give this a shot! Hope they can confirm their team is aware of the issue and investigating.

@AndreGB - That's great news, but still a bummer that it's not performing as expected. Appreciate the updates from your tests!

Jan 11, 2022 12:12 PM in response to Kahantext

Odd fix, but seems to work. All other devices in the house work fine, except for my macbook pro M1 (monterey 12.1). After editing the location suggested by Kahantext, it seems to work. Before making that change, rebooting seemed to help, but rebooting multiple times per day was pretty tedious.

Feb 2, 2022 11:58 PM in response to yslas7

@yslas7 - Yikes. Okay I'm gonna give this a shot. Seems ridiculous, but I'll upgrade again to Monterey this next week and try these steps out to fix things. Hopefully WiFi performance and range are back to normal. Will report back!

Nov 5, 2021 4:54 PM in response to captainkirk24

Also noticing the Wi-Fi strength (bars) is lower on Monterey laptop.

1/3 wifi strength on Monterey laptop
Full wifi strength on Catalina laptop

MG_37

Level 1

13 points

Nov 7, 2021 10:20 AM in response to captainkirk24

I have the same problem on a mid-2015 15" MacBook pro.

LemuelG

Level 1

4 points

Nov 12, 2021 5:13 AM in response to captainkirk24

How did you roll back? It's been a week for me so I'm hesitant to use Time Machine.

Nov 12, 2021 6:54 AM in response to MG_37

Yeah I've tried that several times... no luck.

AndreGB

Level 1

14 points

Dec 13, 2021 8:28 PM in response to ThisDayToday.com

Well, Apple has just released a 12.1 update. I'm updating it and I'll let you know if it improves my situation.

Dec 16, 2021 5:14 PM in response to AndreGB

@AndreGB - I was gonna try the same on my 2015 Macbook Pro, but please update us on your performance.

yslas7

Level 1

8 points

Feb 1, 2022 11:46 PM in response to Wyliecoyote9

I just followed the directions in the OSX daily link verbatim and nothing worked until step 5. Speeds back up to where they belong! I would definitely follow exactly as directed...

frannbug

Level 1

22 points

Feb 16, 2022 7:41 PM in response to captainkirk24

That was nothing short of amazing! Thank you for sharing it!

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Very slow Wi-Fi internet after Monterey 12.0.1 update