Mountain Lion Lag When Switching Desktops...

Discussion in 'MacBook Air' started by jgo78, Jul 27, 2012.

  1. jgo78, Jul 27, 2012
    Last edited: Jul 28, 2012

    jgo78 macrumors 6502

    Nov 11, 2008
    I upgraded to ML today on my 2012 Air. I noticed a slight jittery lag when scrolling between desktops that have browsers on them. Anyone else notice this?

    This happens only while the dock is enabled at the bottom of the screen.
  2. That70sGAdawg macrumors 6502a


    May 23, 2008
    And here we go again... No lag here (2012 Air) !
  3. TheRealDamager macrumors 65816

    Jan 5, 2011
  4. TinyBFK macrumors member

    Jun 2, 2012
    Mine was at first right after the upgrade then I restarted it and all is smooth again.
  5. GBlansten macrumors regular


    Jun 13, 2012
    Thick Ascending Limb
  6. Retina Display macrumors newbie

    Jul 27, 2012
    What the heck? I have a 2012 MBA and it's not lagging when scrolling.
  7. jgo78, Jul 28, 2012
    Last edited: Jul 28, 2012

    jgo78 thread starter macrumors 6502

    Nov 11, 2008
    darn, there must be something wrong with mine then.

    remember, i'm talking about switching through desktops that have browsers running on them. (not talking about scrolling up and down on a webpage)

    let's say you have have 3 desktops going with 3 safari windows, one on each desktop and you're scrolling (sideways) through them, you don't see a slight 'unsmoothness' to it? I never noticed this before ML.

    I rebooted and don't have anything else running but a few safari windows on multiple desktops. I checked this on my iMac and noticed the same issue.

    Perhaps I need to do a clean install.
  8. wonderboyP8NT macrumors newbie

    Jul 8, 2012
    2012 Macbook Air seems smooth all around. Did a clean install.
  9. jgo78, Jul 28, 2012
    Last edited: Jul 28, 2012

    jgo78 thread starter macrumors 6502

    Nov 11, 2008
    hmm, ok, seems the problem is related to mine. I did a test by hiding the dock and the desktop switching lag went away. It's still strange when this did not happen at all with Lion. Guess I'll have to play around.

    Definately when the dock is removed, its smooth. As soon as the dock is there i see the lag.

    Definately has to do with this stacks problem. When i move the dock to the side which doesnt use stacks, it's smooth even when the dock isn't hidden. As soon as i move it to the bottom (with stacks) the lag is there, this is weird. There's no way this should be lagging with stacks. Hopefully they fix this. Both my computers are fast enough for this not to happen.
  10. jgo78 thread starter macrumors 6502

    Nov 11, 2008
    wrong again, i turned off stacks while the dock is at the bottom and it still lags. For me, as long as the dock is visible at the bottom only i get the lag, stacks or no stacks. Messed up.
  11. penguintri macrumors member

    Jun 30, 2009
    I am experiencing the same on my 2011 air. Lag definitely caused by the dock when switching spaces. Clean install of ML. Was fine on Lion.
  12. jgo78 thread starter macrumors 6502

    Nov 11, 2008
  13. phonexx macrumors newbie

    Jun 21, 2012
    I've got the exact same problem and it goes away if I hide the dock. I haven't done a clean install of ML. My setup is a Macbook Air 2012 mid.
  14. Skoopman macrumors 6502

    Sep 24, 2011
    Clean install doesn't matter, it seems to be a ML bug.
  15. jgo78 thread starter macrumors 6502

    Nov 11, 2008
    yep, i did a clean install, same issue. It's not a huge deal, just something a little annoying since it was buttery smooth with Lion. Hopefully a driver or other update will fix it.

    U either have to run your browsers full screen, remove the dock entirely or move the dock to the sides. Why the issue occurs only when the dock is on the bottom makes no sense.
  16. KPOM macrumors G5

    Oct 23, 2010
  17. bp1000 macrumors 65816

    Jul 7, 2011
    Same here too : MBA 2011

    Seems worse at 1080p on an external monitor too

    Noticed it straight away since upgrading. So jerky was making we feel a bit sick (im very susceptible to slow FPS).
  18. CollinCarter macrumors newbie

    Jul 27, 2012
    I have the same problem on a new iMac 2011 version. Driving me crazy.
  19. hmarsili macrumors member

    Aug 7, 2012
    Same problem here with MACBOOK AIR MID 2011. Was working perfectly with Lion, started laggyn after upgrade to ML. Tried disabling stack but nothing.
  20. njean777 macrumors 6502

    Oct 17, 2009
    Same problem with my MBPr, I reverted back to lion due to the UI lag.

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