Apple Keynotes stuttering and choppy

Hey everyone,
This applies to both Windows XP and Mac versions of Quicktime, as I have tested this on both machines. For some reason, I can't watch keynotes anymore at all. I watched the one where Steve introduced the iSight built in to iMacs and the Photo Booth software fine on XP with quicktime. But suddenly past that, I have run into stuttering and AV sync issues that make it impossible to watch. This being said, my girlfriend recently bought a 24" iMac and I also tried to watch it on that - and ran into the same problems. On my XP machine, I've tried uninstalling and reinstalling several times, both newer and older versions. I also tried the Safe Mode, non-directx mode and that didn't work. I don't know what to do. Streaming video otherwise works fine. Movie Trailers and other streams work fine.
Please help! --Jeff
Message was edited by: jfunker

Yes, I have the exact same issue and it is so effing annoying. I wish I would have just stuck with my second-generation Apple TV when I upgraded in October 2013. I've been having this problem ever since upgrading to the third-generation AppleTV, and I can't believe Apple hasn't done anything to fix it.  I am an avid Apple fan, and have all things apple in my home… But this really ****** me off!

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