Bluetooth Magic Mouse lag / stutter .. , Apple Keyboard lag / stutter

I did find a workaround. If I disable wifi the mouse works smoothly... Real useful, Apple..

I was able to figure out how to fix this using this link:

http://forums.macrumors.com/showthread.php?t=1404085

I reinstalled OS X 4 days ago. Somehow, Apple's horrible software managed to carry over my bluetooth and wifi settings (and god knows what else) form my old install. I specifically reinstalled to get rid of all that. When will Apple stop sucking at software?

I guess I should reinstall OS X - again. Is there a way to do that without copying all the broken crap from last time?

This started happening to me after installing OS X 10.10.3

First the mouse gestures wouldn't work, then it would skip and lag across the screen, then the keyboard started behaving oddly.

I tried disabling Handoff and it doesn't help. Deleting the .plist file didn't help. Disabling WiFi didn't help.

After wrangling for days on the forums and other support sites, switching off this and that, I gave up and returned 2 brand new mice to Best Buy.

This really pathetic on Apple's part for this to be happening.

For a company that is supposed to be a technology leader, and have their mouse not even work with their top-of-the-line $3300 Macbook Pro?

Really?

The Best Buy employee at customer service said they get lots of these returned because of these problems!

FIX THIS APPLE...YOU SHOULD BE COLLECTIVELY EMBARRASSED.

I am having the same crappy experience, if I use a USB mouse or the integrated track pad I do not see this issue. I have been exploring various links but almost everytime it says to check this or that either Apple removed the help feature (i.e. displaying Bluetooth power) or the file doesn't exist (e.g. com.apple.bluetooth.plist) I am already on 10.10.3. BTW, I have had nothing but problems with this overpriced Mac. Within the first couple of months the LCD died, a year later the Logic Board had to replaced (video issues), now this issue plus a line, about 4 inches, is on my LCD.

So two days later, and the lag is returning. *** Apple?!

Same issue here, never any issue until 10.10.3, now mouse lag and intermittent keyboard crash, hang or disconnect. Tried different keyboards and still no joy. Reset PRAM etc.

same issue here. I bought an external drive, backed up. Wiped the mac and restored it. And still getting a laggy magic mouse.

UGGH. Wanting to throw my mouse at the wall.

Switched to USB Mouse from 2003.

This has been driving me crazy: your solution seems to have worked - keyboard and mouse now motoring properly, Fingers crossed.

But what else have I lost? Is Apple seriously not ready with a fix?

This worked.

For those who don't know how to do it:

Turn of your mac. Hold Shift+control+option and press ONCE thee Power button( it won't turn it on), the you leave the keys and turn your mac on as usual.

No lags anymore 😀

This has been driving me nuts for ages.

As long as magic mouse is within 12" of iMac all OK, but any greater distance (as normal) then dreaded stutter returns.

SOLUTION!

Remove the aluminium battery cover, replace with a cut down piece of thin plastic to stop batteries falling out (I used an expired Amazon gift card - rigid enough and edges sit neatly inside recess on each side of batteries) , and hey presto!

Works like a charm for me.

I guess the metal battery cover affects the bluetooth range. Without it I see a huge improvement.

Now it is 02.06.2015 and Microsoft is about to release the Windows 10 and the Problem still persists!!! Apple, where are you???????

The mouse is horribly unusable!!! Cannot even do fine movements!!

Disabling the handoff fixed my problems. Thank you!!!

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