I'm doing some editing in FCP and it's starting to stutter enough that it's difficult to use. I'm not getting any dropped frame notices, which is weird, so I think it might have to do with audio? The footage is prores444 1080/24p and the sound is 4 channel (on average) 48khz 24bit audio. Editing off a two-drive RAID0 via esata. Footage is copied straight to the hard drive and synced with in-camera audio via timecode. In-camera audio is then deleted. It's not a problem when I first boot up but when I open any other applications or edit for a while it becomes a problem. We have tons of ram and the computer is very fast. Anyone have any ideas? It might be the hard drive, but esata should be fast enough for prores444 and four audio tracks--and it wasn't a problem when we first started editing. There is plenty of space left on the hard drive.