Magic Mouse lags

Dear community,
my Magic Mouse often starts to lag when transmitting the signal to my Mac. This results in a sluggish and unresponsive cursor. How can I fix it? I am using the mouse on a normal desk, no transparent or otherwise ineffective surface.
Thank you.

Frerk,
Here's an apple article on possible causes of interference:
http://support.apple.com/kb/HT1365
Regards,
Captfred

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A quick update to the jumpy mouse saga:
After a year of problems with a jumpy mouse (see videos below) *I purchased a Magic Mouse to see if the Magic Mouse would solve the jumpiness issue. It did but the tracking speed was very slow. Therefore, I installed MouseZoom to increase the tracking speed. After installing MouseZoom I started noticing the jumpy mouse problems again.*
_*This finding is very interesting!*_
_*It implies that the faster the mouse movement the more likely one is to see an erratic mouse with the pointer making unrequested jumps around the screen.*_
My hypothesis is that the operating system or processor is not allocating enough resources to the mouse if the tracking speed is set to a high level.
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http://www.youtube.com/watch?v=NxLY3-pH-rs
http://www.youtube.com/watch?v=OBzisliiVpg
If you are suffering from similar problems may I suggest three actions:
* Use the Quicktime X screen recording function to record a video of the problem.
* Post the video to YouTube.
* Contact Apple Care and share your video problem description with them.
* Send a note referencing the video and description to www.apple.com/feedback
Category: Mac OSX Feedback
Feedback Type: Bug Report
Feedback Area: Peripheral/Device Support
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I received my MBP 15" (Mid 2012) several days ago. But my Magic Mouse doesn't work very well with it. The cursor lags every several minutes to one hour or two, and lasts for several seconds to several minutes every time. I don't mean that the movement is slow - when it happens, the cursor doesn't follow the movement of the mouse very well, it seems 'jittery'. The cursor may "jump" to the destination 0.3~1 second after I moving the mouse. I tried everything I can do but the problem is still not solved. Here are what I've tried:
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I had the same problem with my new Retina Macbook Pro and my Magic Mouse that worked fine on my previous 2010 Macbook Pro. At work I don't have a wifi network so I share my ethernet connection via wifi so I can get internet on my iPhone and iPad during the day. After reading this thread I tried turning off the internet sharing and it has cleared up all lag issues with the mouse.
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http://www.monoprice.com/products/product.asp?c_id=102&cp_id=11215&cs_id=1024603 &p_id=9475&seq=1&format=2
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<Re-Titled By Host>

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How to solve this is problem?

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Fixed for me:
Disable Internet Sharing
I came across this by accident when I noticed that my mouse was working fine all of a sudden and I went to reenable my internet sharing then the mouse started lagging again. Disabled internet sharing and mouse lag issues stopped. I'm also running Little Snitch 3.5 and I'm not sure if its a factor in the issue but it's currently active and mouse is running great. Will leave my internet sharing setting off.
Hope this fix works for someone else. Good Luck!

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My mouse is often jumpy, unresponsive and unusable. It jumps across the screen, either laggy or in a stuttering motion. I will then use the trackpad since I cant use the mouse and the trackpad works perfectly. So i know it's not a process running, or the laptop running slow.
It will sometimes work if it's just been sitting there a long time, like if I come back in the mornings it may work well for about 10-15 minutes, but then stop.
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- One guy slams the mouse on the table and it fixes it... I didn't want to try that.
- I have compressed air, cleaning out the sensor etc.
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- Prayed to Lord Jobs offering a sacrifice
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Yosemite 10.10.3
MacBook Pro (15-inch, Early 2011)
2.2 GHz Intel Core i7
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Well, they have to, really. How else would they justify the cost of the 'free' replacement. Thing is, if you live near an Apple store you really must use their facilities. That is why you pay their prices for a quality item.
Don't think of yourself as being a nuisance, there is a certain entitlement in buying Apple ... and you are entitled.

Magic mouse cursor lags all the time, how can I fix this?

I've updated to 10.10.3 and this is still happening, please fix this bug.
Thanks

UPDATE and additional info: This problem is still occurring.
Apply have been completely unhelpful so far, after a second phone call, I was just told (again) to restart my MBP, unpair and repair my mouse, and insert fresh batteries. I've also done the SMC and PRAM resets several times.
I'm using my MBP in clamshell mode connected to a BenQ GL2460 monitor. Running my MBP slightly ajar seems to temporarily help with he mouse lagginess but the problem soon reoccurs.
I've tested my mouse on a friends earlier model non updated MBP and the mouse works fine.
I went out a bought a Microsoft USB mouse and the same lagginess happens with it, albeit a lot worse.
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Cause-
A virgin media guy changed the channel during a routine service call saying it was the best channel and one he recommended. He then used the magic mouse via my mac to do a speedtest (60Mb Superhub) in an attempt to consolidate his changes only to condemn my new mouse by saying "mmmm your mouse is very laggy" and also saying he didnt like any Apple products.
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Cure-
Avoid Channel 12 on a wifi routers- it competes with Apple Bluetooth...
Steevi

Oh and by the way, it's part of the bluetooth favorites.

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Try unpairing it. Do you have another mouse that you can use to see if it is the mouse, rather than the computer? If the second mouse works properly, try rep-pairing Magic Mouse.

Magic Mouse Issue (video) other then known lag problem

Hi,
I have a big issue with the magic mouse.
It's better that you just watch the video.
Makes it a lot easier then explaining it.
http://www.youtube.com/watch?v=0hd5lnWz864

I´m having a similar thing, no error message, though.
The mouse does not do any scrolling etc, only left + right click.
Can´t install the "WirelessMouseSoftware", the installer says there´s a later version of this software already installed...

Magic Mouse lags

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