I've just switched from FCP 6 to Fcp 7 .When i try to use full screen playback i am getting a really low frame rate on my imac(3Ghz ) and on my cinema display as well.I did not have this problem before.I've installed Fcp 7 to my Macbook pro no such a problem there.Any ideas ?
If you didn't do the upgrade as a clean install (erasing your startup disk and starting over with a fresh install of the OS, then install FCS (2009) over that, it's likely what you need to do to fix your problem.
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