msecerov
Level 1 (4 points)
Mac OS X

Q: Resizing windows choppy

     Hey Guys, since updating to macOS Sierra, I have noticed resizing some app windows is very slow and choppy. iTunes for example, when trying to resize the window (while in the recently added tab with all the music thumbnails) it takes forever to resize to the desired size, and the animation is all choppy.

     This behaviour seems unatural to me as I have a late 2015 27in 5k iMac with an i5 6600 cpu and an m395 gfx card which should be more than enough for such simple tasks.

     Does anyone else have a simillar problem? Does anyone know a fix?

 

Thanks!

iMac with Retina 5K display, macOS Sierra (10.12)

Posted on Sep 27, 2016 5:25 AM

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msecerov

Q: Resizing windows choppy

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  • Helpful answers

  • by jeremy_v,

    jeremy_v jeremy_v Sep 28, 2016 8:20 AM in response to msecerov
    Community Specialists
    Sep 28, 2016 8:20 AM in response to msecerov

    Hello msecerov,

    Thank you for using Apple Support Communities. It's my understanding since upgrading to Sierra, you've experienced issues with resizing app windows. I know it can be concerning anytime the expected performance changes. I am happy to help

    First, I recommend testing this issue in Safe mode. This will allow your Mac to run certain checks, prevent startup items from automatically launching, and delete cache. Follow the steps below to start in safe mode.

    1. Start or restart your Mac. 
    2. Immediately after you hear the startup sound, press and hold the Shift key.
    3. Release the Shift key when you see the Apple logo appear on the screen.

    After the Apple logo appears, it might take longer than usual to reach the login screen or your desktop. This is because your Mac performs a directory check of your startup disk as part of safe mode.

    To leave safe mode, restart your computer without pressing any keys during startup.

    Try safe mode if your Mac doesn't finish starting up 

    If the issue isn't present in safe mode but returns when restarting normally, try disabling login items using the link below:
    macOS Sierra: If you think you have incompatible login items

    If this issue persists in safe mode, it's possible user settings or files are the cause. In this case try testing in another user account. Use the following link for assistance.
    How to test an issue in another user account on your Mac

    Cheers!

  • by msecerov,

    msecerov msecerov Sep 29, 2016 2:14 AM in response to jeremy_v
    Level 1 (4 points)
    Mac OS X
    Sep 29, 2016 2:14 AM in response to jeremy_v

    Thanks for the answer, I've tried the safe boot method and the performance of my iMac in it is aweful. Everything lags and the animations are missing, even scrolling in safari looks bad. I have tried logging with a different user and the problem is still present.

    I have now checked my login items and they are:

    iTunes helper

    Magnet

    Mail

    Messages.

     

    Have tried closing them all and resizing iTunes is still messy. It feels like my iMac is 10 years old, not a brand new almost top of the line one. Very annoying.

    I do not notice any other performance issues other than choppy animations in some places. So can it maybe be an iTunes fault? Maybe something to do with cover images? Because as I said, it chops most when in the recently added tab with all the album cover images.

    Thanks!

  • by becky_s22,

    becky_s22 becky_s22 Sep 29, 2016 7:17 AM in response to msecerov
    Community Specialists
    Sep 29, 2016 7:17 AM in response to msecerov

    Thank you for trying the steps we suggested and following up. The additional information you've provided is very helpful. Next we recommend resetting the System Management Controller (SMC). This can resolve issues with slow performance and response. Follow the steps below to reset the SMC on your iMac.

    1. Shut down the Mac.
    2. Unplug the power cord.
    3. Wait 15 seconds.
    4. Plug the power cord back in.
    5. Wait 5 seconds, then press the power button to turn on the Mac.

    Reset the System Management Controller (SMC) on your Mac

    If the issue continues, back up your content and reinstall macOS Sierra using the link below:
    How to reinstall OS X

  • by msecerov,

    msecerov msecerov Sep 29, 2016 10:39 AM in response to becky_s22
    Level 1 (4 points)
    Mac OS X
    Sep 29, 2016 10:39 AM in response to becky_s22

    Thanks for the swift response.

     

    I have followed your advice on reseting SMC and the problem still persists.

    Do you have any more advice?

     

    I really do not want to reinstall my whole OS as the iMac is just a month old and I have not installed or done anything that could have affected its performance. The issue is mainly focused on iTunes.

     

    Can anyone else try and open itunes switch to the recently added page and try to resize the window by draging it by the edge and see if the resizing animation seems laggy and jittery?

    Cheers!