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  • fissmoll Level 1 Level 1 (0 points)

    Experienced choppy video after upgrading to Lion on a 2009 17" MBP (NVIDIA GeForce 9400M 256 MB)

    earlier this fall.


    Threw everything out tonight, formatted the disk and made a clean install.


    I have only installled the latest Flash Player since the clean install


    Logged on to and....


    Voila, c'est ca: Choppy video. Niether more nor less, just as choppy as before.


    Are we supposed to have to live with this?

  • Matt Hardy Level 1 Level 1 (135 points)

    So far the answer is yes... I have exactly the same issue.


    Although, wait for the Spotlight indexing to finish...

  • phattprod Level 1 Level 1 (0 points)

    Same thing here: early 2008 iMac, not running much morre than pages, word, mail, calendar and safari. After the start-up everything seems to play smooth for about an hour or so, but after I really get on with my work, Safari becomes unusable as the whole system animations slow down: choppy full-screen video in Safari and Qicktime. But when I open the flash/html5 video in firefox, it works (!!!). Rebooting only takes 30 seconds with my SSD, but it's still annoying I have to say...

    Has anyone experienced better video playback after a fresh install of Lion? I think I'm going to try that next weekend...

  • Geoff Cleary Level 1 Level 1 (100 points)

    Take a gander at one of the items in the just released Mac OS X 10.7.3 update:

    • Address a graphics performance issue after sleep on some earlier iMacs that use ATI graphics


    This looks very promising!  I'll report back after installing the update at home tonight.


  • radio50 Level 1 Level 1 (65 points)

    Geoff -- thanks much for the tip.  I installed the OS X 10.7.3 update on my mid-2008 iMac (4GB RAM) and then used various apps, let it sleep, exercised it pretty much.  Then I tried some high-quality, tripod-based video (1920x1080p), shot with a Canon 5D Mark II.  This included straight-from-the-camera MOV files of telephoto shots of clouds moving across the sky, a boat moving in water -- things that should be very smooth.


    At the risk of jinxing it, I'd say the problem is fixed!  I threw a lot of video at Quick Look and QuickTime v7 and v10, and so far the results are great.  I'm keeping my fingers crossed.  Anybody else having good luck?  Here's hopin'.

  • phattprod Level 1 Level 1 (0 points)

    I have to say that so far it has improved.. even after I wake up my iMac after sleep it's still possible to play youtube and other flash-content in safari without any problems - nice!

  • cookj128371 Level 1 Level 1 (0 points)

    Much better for me too! My iMac is no longer a pain to use. :)

  • Geoff Cleary Level 1 Level 1 (100 points)

    Yep, the choppy video problem is now solved for me.  Mac OS X 10.7.3 was the answer.  This is great!

  • Simonp123456 Level 1 Level 1 (5 points)

    my iMac with ATI HD4850.. seems to work 'properly' in mission control now. I will update.

    Things were a bit jerky before the 10.7.3 update but I don't know if it only happened after sleep or not.

  • Girshon Rutstein Level 2 Level 2 (350 points)

    Some of the streaming videos are choppy, on Lion. Snow Leopard is perfect. Is there a solution to this?



  • Geoff Cleary Level 1 Level 1 (100 points)

    Yes, the OS X 10.7.3 update is the answer.

  • Girshon Rutstein Level 2 Level 2 (350 points)

    It did not help me. Maybe its my computer. This video is chuppy

    If its not for someone, who reads this review and has Lion 10.7.3 then I have to look further.



  • Geoff Cleary Level 1 Level 1 (100 points)

    Yep, that video is somewhat choppy for me, too.  I think that's how the video itself is (maybe filmed at a somewhat low framerate?).  Now that I have 10.7.3 installed, all other video plays quite well (and didn't used to under earlier versions of Mac OS 10.7).

  • Girshon Rutstein Level 2 Level 2 (350 points)

    I am glad that its not my computer, but it is the Liobn OS, because Windows IE 8, Snow Leoprad is playing this video perfectly. Oh well... you can not have everything.

  • wiresandjunk Level 1 Level 1 (0 points)

    I've experienced dual monitor performance issues for several years, but Lion pushed it over the edge.


    This is on Mac Pro 4,1 (2009) Nehalem with nVIDIA GT120, but also happens with the Apple/ ATI optional card from 2010


    If you have dual monitors, try this -


    Play two HD QuickTime movies - one on one screen, one on the other.


    Play both.


    Note if you stop one of them, the jittering stops on the other.


    This happens on Snow Leopard as well, but it's much worse on Lion.


    Disabling Beam Sync using Quartz Debug helps, but not for long.


    Sometimes it gets so bad it looks like 5fps redraw. When that happens, if you "reset" by opening the Monitors panel and just move one of the monitor locations (so the screens go out and back on) the jittering is back to the normal crappy level.


    The only thing to make this go away for me is to use two display cards in the mac pro - one for each monitor.