Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Why does it lag so much when I scroll in Safari? (OS X Lion)

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 NYTimes.com doesn't have much lag when scrolling. But most websites (like mine: http://wistfulwriter.com) 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: CNN.com, WashingtonPost.com, 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

Posted on Jul 24, 2011 1:45 PM

Reply
27 replies

Jul 26, 2011 1:46 PM in response to wistfulwriter

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..

Jul 26, 2011 2:12 PM in response to wistfulwriter

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.

Jul 27, 2011 12:28 AM in response to AlexUK

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....

Aug 30, 2011 12:46 PM in response to wistfulwriter

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 com.apple.safari.rss.plist

Go to FINDER-LIBRARY-CACHES- and delete the folder com.apple.safari


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. 😉

Why does it lag so much when I scroll in Safari? (OS X Lion)

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.