The only difference between my clip settings and sequence settings is that the sequence is set to progressive scan. The reason I said it was rendered is because I rendered it from After Effects and brought it in to FCP.
There’s two clips in my experiment made from the same original media file. Shot on a HVX 200 at 1080i/60i. The first sequence matches the shot clip. The second clip was from the shot clip take into AE, affected at 24 fps, and brought into Final Cut Pro under a similar sequence as the first except as 24p.
I at first played it off a hard drive with FireWire 400. Then I copied it onto the computer’s hard drive and it still lags.