Natural scrolling not completely smooth

Discussion in 'Mac OS X Lion (10.7)' started by C64, Jul 23, 2011.

  1. C64 macrumors 65816


    Sep 3, 2008
    When I scroll with one of the newer trackpads, it doesn't fluently slows down at the send. So, scroll a bit, and at the end it slows down when it's getting to the point where it's supposed to stop. In Snow Leopard it fluently slowed down until it stopped. Now in Lion it stops near the end for a millisecond, and then jumps a tiny bit further to the end.

    I have it on multiple machines that are fast enough, so it's not that. Anyone else noticing this? I don't know if this is supposed to work this way, but when you're scrolling all the time it just feels everything is very jittery and suggests that the app can't keep up.
  2. SeasideBoy macrumors newbie

    Jul 24, 2011
    Essex, United Kingdom
    Jittery Scrolling

    This is exactly my experience too. At first I thought it was due to the system indexing the hard drive, but even since this has finished, the scroll is just not as silky smooth as with Snow Leopard.

    The problem seems to span every application such as mail and chrome.

    I still have my bluetooth magic mouse connected and the effect is the same whether I use the trackpad or the mouse.
  3. iammike1 macrumors 6502a


    Oct 25, 2007
    Columbia MD
    My personal experience. Scrolling was jagged/jumpy when I upgraded Snow Leopard to Lion. When I did a clean install of Lion the problem was gone.
  4. ennerseed macrumors regular

    Jan 3, 2002

    Fixed. I deleted my Mouse Prefs
    User/Library(which is invisible now)/Preferences/
    All smooth now.

    I believe it might be from having smooth scrolling turned off in Snow Leopard and that preference not having a UI for changing in Lion.
  5. tblrsa, Jul 24, 2011
    Last edited: Jul 24, 2011

    tblrsa macrumors regular

    Jan 14, 2010
    Oh my god, thanks! I´ve had that same experience too.
  6. iammike1 macrumors 6502a


    Oct 25, 2007
    Columbia MD
    Out of the blue, mine went from smooth to jagged again. I deleted the first two files you listed but didn't find the 3rd one, most likely because I have no Magic Mouse hooked up.

    Unfortunately this did not fix the problem for me even after a reboot. :(
  7. denture14 macrumors newbie

    Jul 31, 2011

    Yeah, I'm having issues. I'm on a MacBook air and can't find any of those three files you mentioned. However, the scrolling for me is only jittery on certain webpages, mostly busy ones. Even after letting them load completely it still is an annoying setback.

    Any suggestions?

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