Choppy/jerky UI in Mountain Lion

Just upgraded to Mountain Lion running on a 2011 3.4GHz i7 iMac. I'm getting choppy/jerky animation in the UI. When I'm changing spaces, switching the notification center on and off or using the launch pad to show all windows open, I don't get smooth scrolling. Let me mention that it is not a clean install. I did repair disk permissions but no change. Does anyone witnessed similar behaviour?

Thanks!

iMac, OS X Mountain Lion

Posted on Jul 25, 2012 1:55 PM

Reply
76 replies

Oct 17, 2012 1:04 PM in response to aolzi

I have a MacBook Pro late 2011, 16Gb RAM (upgrade from 8Gb). I upgraded from Snowl Leopard to Lion, and from Lion to Mountain Lion. An installation from scratch would not be feasable (I tried but I could not reinstall all my app easily) so I restore from time machiene and ru the update... but this is another story.


There is a lag between a user action (typing and moving on the mouse) and when the update get on the screen. VERY ANNOYING. I have the problem moving the windows on the screen (dragging and dropping windows), scrolling up and down and even on typing in this very window. On Lion I did not have any problem.


The problem happen ONLY on the external monitors.
I am using a Dell U2410 but I see the same problem also on a old Dell 19" (CRT).


Best,

Chris

Oct 18, 2012 12:03 PM in response to aolzi

I would be glad to do a fresh install if I can get back all my apps. When I tried there were some apps that were not registered on Launchpad (including iWork) and I am not sure where the licence # is. I tried to copy back the Apps including the Library folders and Launchpad could not detetect that the apps were already installed. I concluded that Installing from scratch and restoring the apps is not a use case for Apple.

Oct 19, 2012 4:04 PM in response to CrisCros

Don't know if this is a universal issue with AutoCAD 2013 or not, but saw this issue immediately upon installing this program on a MacPro (mid 2010). The choppiness is there after either restart or power on inspite of AutoCAD being up to date. It does go away once the program is launched and shutdown again. Maybe a clean install will fix whatever AC broke.


Will post back with results

Oct 29, 2012 9:55 PM in response to aolzi

So there are several threads about this - and it was driving me mad. Many were related to either upgrading to ML, or rMBP. I had neither of these - but a older MBP 2008 that had been doing just fine with Lion and ML and then suddenly started having very laggy scroll.


Not sure what triggered it - but I did fix it. One or all of the following may have been the ticket


enable mirroring if you've used a second display but don't have one attached.


updated to latest flash player


uninstalled the following preference panes:


perian

menu meters

adobe flash

teleport


Rebooted and I've returned the the smooth scroll

Nov 11, 2012 3:50 AM in response to David Klinkowize1

Just want to post my "solution", which eliminated jerking - even if the work around has nothing to do with CAD software.


1) Close all running user applications

2) Remove all created desktops (so that only one single desktop remains)

3) Close all trackpad extensions like jitouch or better touch

4) Reset all customized keyboard shortcuts which concern Mission Control to defaul values

5) Reboot


This workes for me, maybe for some one of you guys too.

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Choppy/jerky UI in Mountain Lion

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