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Q: Yosemite very laggy after installation

Hello,

I have a late-2012 Macbook pro and Today I installed Yosemite. But starting from the moment after finishing the installation I feel a very obvious lag in some cases. Especially in Safari, iTunes notifications and switching between windows I experience something like it gets frozen for a second, and it goes on. I don't know If it only happens to me or it is just an ordinary post-update process (already 5 hours passed after installation), I am really uneasy with that. So what can I do at this moment? If you have any suggestions or comments about the issue, I'll appreciate.

Thanks,

MacBook Pro (13-inch Mid 2012), OS X Yosemite (10.10)

Posted on Oct 17, 2014 12:11 PM

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Q: Yosemite very laggy after installation

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  • by timmeh_gee,

    timmeh_gee timmeh_gee Aug 4, 2015 5:56 AM in response to plindelauf
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    Aug 4, 2015 5:56 AM in response to plindelauf

    What @plindelauf has said is exactly the problem I'm having and exactly my observation. As soon as an external screen is connected to my 2011 Macbook Pro the graphics switch to the AMD Radeon HD 6490M. Once that happens it's not long before there is considerable lag when switching between applications and tabs. The UI animations, normally smooth are barely visible as the graphics try to at least render a few of the frames before the transition is over. Window dragging is also extremely laggy.

     

    I don't recall this being an issue in versions of OSX prior to Yosemite. I have ticked all the boxes of the first things to try (reset pRAM, SMC etc) but nothing fixes it. I agree that a driver update from Apple may be our only hope. How do we get Apple Support's attention on this?

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