Slow wifi after Big sur update

Yes! Thanks for confirming. That’s driving me crazy. The device that was the most expensive by far only has one third of the download speed of all my other devices... very very disappointing. Hoping for Big Sur 11.2

I'm having the exact same issue - have tried all the steps, including booting from a USB to an older version. The older version works great, Big Sur does not! Currently, running 11.2.3 on a clean install new MacBook Pro.

I just set up a new Macbook pro (16in) today with 11.2.3 and this is still a problem.

Internet was great on catalina before I upgraded. Upgraded to bigsur and the WiFi internet is absolutely terrible.

I went through the recommended steps to solve this problem, but nothing helped.

When will there be a solid solution for this apple? It's quite disappointing, I can barely use the laptop with speeds this bad.

I’m having the same issue on a macbook pro 16”. After system restart the wifi speed is around 800 Mb/s (I have 1 Gb/s connection). A few hours later the speed goes down to around 200 Mb/s. Common Apple, I spent a lot of money and I want a decent wifi speed. I’m 100% sure it’s related to macos issue - I’m also on Big Sur. The connection speed is stable on my iphone x. I have the unlock w/ apple watch option enabled, but don’t think that it makes any difference.

Disabling this feature is not an option for me, since I find it very convenient and that’s why I purchased a mac to have one ecosystem. I also use a magic mouse so if it’s a bluetooth related issue it won’t make any difference. I bought a hub with ethernet connection, but it’s extremely annoying having such a bad wifi speed on a such expensive laptop.

I completely agree to you. I also want Apple to fix this annoying bug as I really liked this feature.

Maybe you just could deactivate it for a single day to test if this is fixing the issue. Then maybe we could pass this feedback on when making a phone call with Apple support.

I tried this in hope to enable unlocking with my apple watch again, but now my download-speed ist down again. The apple watch workaround worked perfectly but now I can't get it to work again. :-(

My conclusion: If the apple watch workaround worked for you then don't touch it...

I have the same problem with Macbook 12inch after updating to Big Sur. Have sympathy with me - I have a 20mbps contract that is now down to 1 or less mbps!! I have done everything - read through all the comments, rebooted, deactivated apple watch, switched off bluetooth, updated latest software,Tech guys opened Macbook and reset, etc, etc. iPhone and iPad work perfectly - just the laptop. Please Apple fix this bug.

Thank you very much for your help !!!I struggled with this problem from the beginning (MacOS big sure) omg finally I can watch 4k movies from synology,nobody was able to help-technical support always invented other reasons !!!!!! I was about to buy a new router thank you again you are the best !!!!!

This!!! This absolutely solved my issue straight away within minutes. I live in the Middle East so my wifi is naturally at 40-50 mbps, but with the new update, it was as slow as 2mbps, after your helpful response, it went back to its normal speed.

Thank you!!

Oh yeah - I'm using 5GHz only and on a dedicated channel - so definitely the right settings all the way.

Same situation as in my first post:

If my iPhone 12 Pro and ASUS RT-AX55 support Wi-Fi 6 - then I should be getting the 700-800mpbs that I'm paying for. My ISP provides 800mpbs, confirmed by Ethernet on both - Mac and Windows - so I should be getting at least 700mbps on my iPhone 12 Pro(Wi-Fi 6), iPad 7th Gen(Wi-Fi 5) and MacBook Air 13 Retina 2018 (Wi-Fi 5). Currently, I cannot get over 450mbps on iPad and MacBook Air, iPhone 12 Pro goes up to 550mbps, if you switch to AX Settings only.

I'm glad I'm not crazy... I just received my MacBook Pro 16' and the connection on wifi is horrible; I get 2 MBPS vs. 80 on my iPhone and iPad. and no speed issue on my Mac mini either (on Big Sur as well).

I tried everything listed in these posts: disconnect the unlock with watch, rename Bluetooth file, take my network off, restart, and put it back on, and still only one bar on my network. I use a Luxol network, restarted all the routers, and still no luck.

Very frustrating Mr. / Mrs Apple. We need help here, especially after shelling out 3 grands on a laptop!

I don't have Apple Watch so that option is not available for me.

I'm gonna try this tomorrow as reading this thread has made me realise I'm not going mad. It's definitely since the update the other day, and as people describe. Truly maddening behaviour.

Cheers.