Bluetooth Apple Magic Mouse jumps and moves erraticlly on screen

I had the exact same symptoms. I unplugged everything from the USB ports and it got better. When I plugged stuff back in the problem returned. In my case the culprit seemed to be USB CF card readers. If you have no USB devices, try deleting your Bluetooth devices (other than mouse and keyboard). It may be that the Bluetooth tranceiver is actually a front end to an internal USB channel (this makes a bit of sense if you think about it). So, try deleting your bluetooth devices, then reboot and see what happens.

In my case it looked like the problem was caused by external devices locking up the I/O associated with the USB. In reponse the CPU seemed to time slice the channel across the connected devices. This works fine for things like memory cards, but for a mouse that needs to repond in real time, it looks like the movements queued up and then came through all at once, hence the jerkiness of the mouse and "burst mode" keyboard response.

I use 4 Macs... 2 at work and 2 at home..they all do that..

I thnk it has to do with the multitouch... Or the way I grab the mouse...I cant rest my mid hand area rest on the mouse..I have to keep afloat..

ghj

Do you own a pet? My iMac developed the exact same problem. After close inspection of the mouse I found a very fine cat's hair stuck across the led lens... Gave it a good clean and it's working as new...

Paul m

I've used at least four Magic Mice with it least as many Macs (new and older iMacs and a fairly recent MacBook Pro) and have experience jumpiness on all of them. I'll be editing a page in InDesign or Acrobat and suddenly the document jumps forward 10 pages. In Photoshop the focus will suddenly shoot halfway across the image canvas. A fairly recent problem has been when I've been entering a size in the measurement palette when all of a sudden the numbers take on a life of their own and start scrolling to infinity. Most all of my problems are with CC programs because that's what I use most, but Office can also become so flaky that my wife refuses to use the Magic Mouse on her iMac.

No I do not own a pet

Same problem on Mac Mini with both Apple Wireless Keyboard and Magic Trackpad. All purchased February 2014. Latest editions.

I've just experience exactly the same irritating problem. However, the solution is really simple. Just give the little optic a thorough and careful clean with a tissue or glass cleaning cloth and bingo, everything is back to normal. Best of luck.

I was having this issue today and I simply unplugged my usb speaker phone and magically it went away. Someone earlier in this thread mentioned similar solution.

Just purchased magic2 mouse. It works properly only when wifi is turned off on my macboook pro.

Else it is jumpy as well as keeps losing connect.

PLEASE HELP. Looks like Apple stopped worrying about quality of products. This is my third mouse in last 2 years.

Try removing the bottom cover and lightly cleaning the optical-reader lens with a microfiber cloth. Then, if you have a can of Blow Off Duster, give it a shot to remove any remaining dust. Also, check in System Preferences to see if the tracking speed on your mouse is set to the "Fast" position. If so, slow it down to the middle level.

Well here we are, it's almost 2017, and I have just about had it with Apple's so-called Magic Mouse. My first came with 3 pair of re-chargeable AA cells packaged with my early 2009 24 inch dual core 2.9GHz iMac and now the new with a single disposable AA cell accompanying a 27 inch 3.2GHz Intel core i5 iMac. No difference between them when I try to tweak parameters in 3D software (DAZ Studio 4.9 & Poser 11) - the cursor jumps around making the task impossible. Using with Photoshop is almost as bad. So I use the hard wired Super Mouse connected to the USB Apple Keyboard for Graphics and 3D - forward to the past, if you get my drift. I like the wireless for other things but switching input devices back and forth is a pain so I reside in the past. This thread started in 2010 and is still alive in the last two days of 2016. Anyone at Apple support pondering this?

😕