Trackpad extremely choppy after 10.10.3 upgrade, no issues before.

There are several possible causes for this issue. Please take each of the following steps that you haven't already tried until it's resolved. Some may not apply in your case.

1. Follow the instructions in this support article, and also this one, if applicable. A damaged or defective AC adapter could be the cause, even if it's the right kind.

2. Press down all four corners of the trackpad at once and release. If there's any effect, it's likely to be temporary, and in that case the unit must be serviced or replaced.

3. Open the Bluetooth pane in System Preferences and delete all pointing devices other than the trackpad, if applicable. Disconnect any USB pointing devices. By a "pointing device," I mean a peripheral that moves the cursor, such as a trackpad, mouse, trackball, or graphics tablet. A plain keyboard is not a pointing device.

4. If your model has an infrared receiver for use with an Apple Remote, disable it.

5. Start up in safe mode and test, preferably without launching any third-party applications. If you don't have the problem in safe mode, but it comes back when you restart as usual, stop here and post your results. Do the same if you can't start in safe mode. If there was no difference in safe mode, go on to the next step.

6. Reset the System Management Controller.

7. If you're using a Bluetooth trackpad or mouse, investigate potential sources of interference, including USB 3 devices.

8. A swollen battery in a portable computer can impinge on the trackpad from below and cause erratic behavior. If you have trouble clicking the trackpad, this is likely the reason. The battery must be replaced without delay.

9. A defective peripheral device or a damaged cable can cause the built-in trackpad of a MacBook to behave erratically. If you're using any wired peripherals, disconnect them one at a time and test.

10. There's also a report of erratic cursor movements caused by an external display that was connected but not turned on.

11. If none of the above applies, or if you have another reason to think that your computer is being remotely controlled, remove it from the network by turning off Wi-Fi (or your Wi-Fi access point), disconnecting from a Bluetooth network link, and unplugging the Ethernet cable or USB modem, whichever is applicable. If the cursor movements stop at once, you should suspect an intrusion.

12. Make a "Genius" appointment at an Apple Store to have the machine and/or external trackpad tested.

Hi all,

I have the exact same issue after upgrading to 10.10.3 and nothing from the list of Linc Davis has helped!

Anyone else?

How can we make sure Apple knows about the issue? I have tried to find a way to write this bug to Apple, but I can only find ways to call them.

Do you have a link to report this error in writing?

I saved this info from another post:

How to Report a Bug in Apple Software

Here are the places to report bugs:

Get an account at

http://developer.apple.com/ then submit a bug report to http://bugreporter.apple.com/

Once on the bugreporter page,

-- click on New icon

-- See if you need to attach a log file or log files, clicking on Show instructions for gathering logs.

-- Scroll down to find the area or application that matches the problem.

My issues with the trackpad have been resolved by putting new or recharged batteries in both the trackpad and the keyboard. If the batteries in the keyboard are weak, it may interfere with the bluetooth operation. I reached this conclusion because I put fully recharged rechargeable batteries in the trackpad and it continued to lag. Then I noticed that the batteries in by keyboard were at 23%. I recharged those and reinstalled them and now everything works great. Hope this helps.

I also noticed 10.10.3 started complaining about a suddenly low battery charge in the keyboard, mouse and trackpad. Change all them but no luck. Not even with cabled keyboard and mouse. Also did a Safe Boot where all devices behaved normal.
I then clearly noticed that the erratic and "jumpy" behaviour started when Safari or anything that uses WebKit (like Chrome) was started. Did a rough deletion of plug-ins in both "Internet Plug-Ins" folders and problem still persists. As long as I don´t start "WebKit-anything", it works OK.

On my iMac this also started happening after the 10.10.3 update.

I've noticed something very strange happening in the bluetooth menu. I have only two Bluetooth devices set up on my iMac: Keyboard and Mouse.

It's not linked to my iphone or ipad, although both of these will probably use Bluetooth to advertise their Continuity Handoff information.

Whenever the trackpad gets choppy and I look in the bluetooth menu item, I will however see another device connected: my partner's iPhone or even his iPad.

I have never connected that iPhone to my iMac in any way. It's not set up in my Bluetooth preferences and my iMac's not in his Bluetooth settings either.

Yet in the menu item it shows as connected, next to my keyboard and mouse. If there I select to disconnect from it - the choppy trackpad movement stops immediately.

The remedy doesn't seem to last forever, though. It keeps reconnecting every now and then

I was just going to write that resetting the SMC controller fixed my issue when my trackpad went back to the same choppy response as I tried to click "reply". Fixed it for a few hours and then the issue returned. Hoping for a fix in this thread!

Strange. All the problems with Bluetooth devices and 10.10.3 are suddenly gone. Checked six machines and they're all OK now.

No actions done by me at all.

Exactly the same symptom as I have here, very frustrated.

I have tried resetting the PRAM and it seems to be working at present, only just done it though, maybe worth a try. Turn Mac of, restart and press cmd/alt/p/r on restart and wait for second start up noise.

I'm experiencing exactly the same thing right now.

Things getting worse after getting back from sleep mode or screensaver mode.

My 5K retina screen is too big for this choppy crappy trackpad movement.

please somebody help me TT