Previous 1 2 Next 27 Replies Latest reply: Oct 27, 2015 8:34 AM by tigersfan2005
wistfulwriter Level 1 (0 points)

I've noticed that ever since the OS X Lion update, webpages in general are pretty laggy when scrolling.  I let the page completely load and when I scrollthere is stuttering and lag.  It is made most apparent when I use momentum to scroll a long webpage.


It seems to happen mostly with more complex pages (which makes sense I guess).  For example, some parts of doesn't have much lag when scrolling.  But most websites (like mine: are pretty laggy.  I know I use a background image and use special fonts, but I never had this problem before the Lion update.  Many other sites lag too:,, etc.  It seems like any time there is an image, there is stuttering.


I have tried setting the zoom level to default (command-0) just in case, and I have exited unnecessary applications and everything.  The lag is still there, regardless if I use fullscreen mode or not (though on some sites it is not as noticable in windowed mode).


Any clues?  Thanks!

iMac, Mac OS X (10.7), 27 inch, Mid-2010. 3.2 GHz i3
  • Carolyn Samit Level 10 (103,365 points)

    From your Safari menu bar click Safari / Reset Safari. Select the top 7 buttons, click Reset.


    See if that makes a difference in scrolling.


    How much free space on the hard drive? From the Finder, click View / Show Status Bar

  • wistfulwriter Level 1 (0 points)

    8.8 GB free, and unfortunately the lag still persists after the reset.

  • Carolyn Samit Level 10 (103,365 points)

    8.8 GB free? There's your problem. You need to free up disk space ASAP. 15% free space of the capacity is the bare minimum.


    Freeing space on your Mac OS X startup disk

  • wistfulwriter Level 1 (0 points)

    Can you please explain to me the technical reason why more disk space would lead to better graphics performance?  Thank you.

  • Carolyn Samit Level 10 (103,365 points)

    The less free space the poorer the performance of the drive overall.


  • wistfulwriter Level 1 (0 points)

    How do you explain the performance difference between pre-Lion update and post-Lion update?  I have now freed up some more space to have even more free space than I did before I updated to Lion, but the scrolling stutters still persists.

  • Parre Level 1 (15 points)

    I have the same problem with Safari lagging. If I use Chrome or Firefox there is no lagg. Hence the need for more disc space is not the issue here.

  • JAMIII Level 1 (0 points)

    I have 200GB of free space and I am lagging too.  Please stop saying it's a hard disk space issue. 


    I am using Firefox so it's not a Safari-specific issue.

  • Bluspacecow Level 1 (40 points)

    Would it be possible to upload a video of this scrolling stuttering ?


    Does it occur in any other applications ?


    What kind of mouse do you have ?

  • AlexUK Level 1 (0 points)

    I have the same issue but I use Chrome. Since upgrading to Lion, after using the browser for a while (sometimes just 20 mins or so) the scrolling becomes UNBEARABLY laggy. If I quit Chrome completely and open it again then it's fine, for a while...


    This NEVER happened before Lion, I thought it was a Chrome only issue but after googling I guess it isn't..

  • wistfulwriter Level 1 (0 points)

    For me, the scrolling lag has been an issue regardless of how long the browser has been open.  I just want to reiterate that, at least for me, it is mostly noticable with fullscreen Safari.  Chrome also has this issue in both modes.  In Firefox, it seems to the least laggy.


    To describe the issue, it is as if the frame rate has been lowered significantly.  Whereas before the Lion update, everything scrolled very smoothly (even at high speeds and on complex image-heavy sites), there is lag present now.  I will try to find some kind of frame rate program.

  • captainjy Level 1 (10 points)

    I think Chrome needs an update.  I'm experiencing scrolling lag in Chrome as well, in particular when there's flash or a dynamic image on the screen.  Possibly a Java issue?  I am also seeing a type of lag in Mail with conversations.  Scrolling here is spongey, for lack of a better description.  For me, some of my issues are likely related to having a 2008 MB Pro with only 2GB RAM, however, Snow Leopard was like butter.  Definitely needing some sort of fix....

  • Parre Level 1 (15 points)

    For some reason its only Safari lagging for me and I think its more in Fullscreen but not sure. Safari is as smooth as a 3 month old bikini wax. Chrome is very speedy and no lagg at all. I have 8GB RAM though.


    Most noticable difference between Safari and Chrome is when I'm on Facebook, and in Safari it's terrible.

  • BigWood Level 1 (0 points)

    Clay G wrote this on another thread so I'll give you his suggestions and it WORKED FOR ME!


    Go to FINDER-LIBRARY-PREFERENCES- and delete the folder

    Go to FINDER-LIBRARY-CACHES- and delete the folder


    Restart your Mac.


    I too was experiencing some severe lagging in some web sites-using Safari.

    Also heard that Adobe (v 10.1) can cause lagging problems. V. 10.0 is more stable.


    Did what Clay offered and NO MORE LAGGING.

    BTW, you'll have to do a search(SPOTLIGHT) for SAFARI but it pops right up and you still have all your bookmarks and favorites.


    Hope this helped.

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