Currently Being ModeratedJul 21, 2011 6:45 PM (in response to ulzeraj)
I´m having the same issue on my 27" iMac C2D 3.06Ghz wich i think has an ATI 256mb video card.
Transission to fullscreen, open folder in launchpad, and expose are very laggy. Switching through different spaces or fullscreen apps works like a charm. I hope apple fix this as it makes the user experience not very pleasant
Currently Being ModeratedJul 21, 2011 8:22 PM (in response to ulzeraj)
I am running on the latest Mac Pro tower and the video is super choppy as you said with screen animations in Lion. I really hope they fix this
Currently Being ModeratedDec 9, 2011 1:46 PM (in response to ulzeraj)
I have the same Graphics card (Intel 950) - It is now December and I see that it is still a problem that has not been fixed...
Currently Being ModeratedFeb 3, 2012 8:36 AM (in response to faincut)
Same problem here on my mid-2008 iMac. But ... the new version of OS X 10.7.3 seems to have fixed it. I have tried lots of 1080p video files and they all play smoothly. Here's hoping the good luck continues.