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Milord-User Author

Level 1

4 points

Network/Wi-Fi issue with Thunderbolt Display

Hi,

I have bought a Mac Mini M1 512/16 two weeks and two days ago,

I have since experienced some network disruption, instability, and slow-down, but I thought it was my internet provider fault, then I got the idea to compare with my Macbook Pro 16 with the same condition (same network, same ultrafine 5K display, same thunderbolt cable, same everything OK),

On the mac mini I got 70~160 MBit/s, while on the Macbook Pro 16 I got 320~350 MBit/s !

So I tried to disconnect the thunderbolt display off the Mac Mini, launching the speedtest just by pressing the Enter key on the keyboard... waiting few seconds for the test to finish then reconnecting the display to see the result...

It goes up to ~300 MBit/s ! Still a bit under the Macbook Pro 16,

So I sent screens to apple support online chat, and got an apple store appointment tomorrow,

I have noticed that a lot of people got the same network issues with M1 devices (just google it you will see),

I am very angry against Apple, also they said they will not immediately get back the defect product because I am over the 14 days delay by few... So will see tomorrow with a technician,

A computer with such network hardware issue, as called a hidden defect, is no use to me at all, I hope a refund,

I join here two screens (100Mbit/s is with thunderbolt display plugged and 300MBit/s is without),

I am very angry against Apple,

Thank you for reading.

Mac mini, macOS 11.4

Posted on Jul 2, 2021 1:50 PM

Top-ranking reply

den.thed

Level 10

82,540 points

Posted on Jul 3, 2021 8:52 AM

Poorly shielded cables and devices are know to cause Wi-Fi and Bluetooth issues.

see > https://support.apple.com/en-us/HT201542

This is not a new problem with the latest Mac Mini. It has also been a problem with the 2012 and later Mac Mini’s using poorly shielded high speed USB 3.0 and Thunderbolt cables and devices. You also need to keep in mind, that the Wireless card is in the back and the Antenna is on the bottom cover.

Try rearranging your setup so that all the cables and devices are not in between the Mac Mini and your Wi-Fi Router.
Try getting and using a better shielded Thunderbolt cable from the Mac Mini to the Display.
Try moving the Mac Mini and Router closer together or using an Ethernet connection instead of Wi-Fi if possible.
Try standing the Mac Mini on it’s side with the bottom facing in the direction of your Router.

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Network/Wi-Fi issue with Thunderbolt Display

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