4th Gen 2020 M1 Mac mini bluetooth issues with Magic Mouse2

Ok seriously guys I think I figured it out!

I was trying to solve this jaggy/jerky mouse (Logitec M590 wireless using bluetooth) for ages on my 2021 Macbook Air M1 (base model).

What I did was I disabled the Giant "Shake to Find" Cursor in MacOS because it was bothering me, and INSTANTLY I get SMOOTH MOUSE!

Just also of note, I did notice a difference also turning off my Apple Trackpad that usually would sit nearby the mouse. I also did try the sound output to not the macbook air M1 speakers (I sent it to Homepod Mini nearby). I did also (just to note) install the logitec drivers, but didnt start noticing any difference till I got rid of shake to find and turn off external trackpad power.

I think it is a combination of issues, that's why Apple is having issues fixing this, and this is totally bs that Apple didn't catch this issue during basic testing of the laptops before launching to public, Steve would be super super not cool with what's happening, a mouse is the MAIN input into these. A laggy mouse makes me feel like I'm using a windows laptop from 1996. I suspect this is a hardware issue (bluetooth motherboard unit shielding/bandwidth/interference issue) AND a software issue.

Just now installed Big Sur 11.3. It took only ten minutes to find out it did not solve my Bluetooth issues (lagging Apple Magic Mouse Gen 1). This is the more frustrating as I had less problems using 11.2.2 and (for some time) 11.2.3.

Reverting back to my Asus BT400 bluetooth dongle solution which still performs without hiccups.

I had the samen problem. I tried many things (advised by Apple support), but nothing helped. Last thing I could try was turning off FileVault. For me that worked.

Same. Wifi off fixes the issues for me too.

Just a thought. Check to see if your iPhone is connected with Bluetooth on the M1. Mine was and since I disconnected it I am getting very few reconnect/disconnects with the mouse.

No disconnect for 4 days, 8-12 hrs per day. All bluetooth devices working correctly (I do not have an Apple Watch to test login). Updated Mac OS to latest beta and all other devices to latest iOS.

Couple of days I installed 11.2 and it has cured all my Bluetooth woes. So glad it’s over

macOS 11.2.3 Big Sur

I had originally thought there was relationship between the USB-C display and the Mac Mini. This does not appear to be the case.

After the last 30 hours of working with the device. The only time I have noticed the Magic Mouse 2 disconnecting/reconnecting is when I am in Safari or Chrome. It seems to occur right when I click to open a webpage or opening a new YouTube TV channel. It does not happen all the time and may be coincidental. I connected the Mini directly to Ethernet and shut off WiFi like someone else had suggested and I have not had any dropouts. I cannot guarantee this is the solution, but I am trying to narrow it down so Apple can fix it because otherwise the Mac Mini M1 is very good.

I would say, its definitely pointed to Wifi vs. Bluetooth. I can reproduce that simple. I normally use "unlock by apple watch" for my mac. If i switch off Wifi, whatever i do, no problem with my mouse. Switching on Wifi, to unlock with the apple watch (Wifi is needed for this function) the mouse movements starts to leak.

The same i can see, if i open the Airport Utility and try to configure a airport express, which is binded to the network by Wifi (configured as wifi extender) - got a short flicker/mouse movement leak.

I had the similar problem with my Bluetooth headphones. I solved it by removing any electronic which can cause interference. In my case I moved the Google home speaker and since then I had no problem with the interference. I think it’s to do with the weak Bluetooth signal in the Mac Mini. Good luck.

I've found a 3/3 attempt reproduction on this (paging Apple Bluetooth team ;) )

Attempting to AirDrop some photos from my iPhone 12 Pro to the Mac mini results in this drop out immediately. Even my Magic Keyboard which is now plugged in. Both devices on the same desk, both connected to the same WiFi network.

I don't even need to actually initiate the transfer, just bring up the main AirDrop UI on the iPhone and once my Mac mini appears on the view - the mouse (and keyboard) drop from the Mac mini.

The only fix that has worked for me so far is to disable my WiFi on my Mac Mini. As soon as I did that all Bluetooth issues disappeared and my Apple Magic Keyboard connect fine. Although I am on ethernet, not having WiFi sucks because lack of airdrop and apple watch security proximity function. I hope Apple fixes this issue soon.

Just a quick update to everyone:

Today I've started experiencing the issue when waking up the iPhone completely ruins the Bluetooth connection of the Mac Mini M1. Not sure why.

Disabling WiFi, Bluetooth AND Handoff on my iPhone and Mac Mini (apart from Bluetooth, obviously) didn't make a difference.

Speaking to a senior advisor from Apple support they've (FINALLY!) acknowledged that this issue is known to them. The advisor was very reluctant to admit it though. Not sure what they have to hide.

Any way, I've agreed to send them log files to help them sort these issues.

It seems to be a software related issue. The reason is:

a. People with replacement units still had this issue

b. It happens on multiple bluetooth devices

c. It happens on multiple Macs - all on Big Sur

I, too, was suffering from this. I read somewhere else that if I don’t use either of the USB-A ports it helps a lot, and I can confirm the issue happens significantly less now. However, this still isn’t a great solution because that only leaves you with two usable I/O ports.