Originally posted by wuntrikpony
It's not better, it's just has a faster GUI. Also, I use a jog shuttle controller, and it has so much of a delay on it now that it is hardly useful anymore. The reason being that hitting play now takes longer for the video to start playing than it did before. I still love FCP4 more than anything. I have given up speed so I could have features, but it is unfortunate that the speed has been hit so hard.
A couple of things...
I have read of some problems with FCP 4.0, and have also read that 4.1 helped a lot. So, make sure you update if you haven't already.
Delays in playback? What kind of footage are you using? DV? Uncompressed? and what kind of hard drive system?
I'm assuming you have a Contour Design shuttle control? Check www.macupdate.com to find a newer driver. There seems to be some issues as to who has the updates. I had to do a lot of searching to find a newer driver. If I recall correctly, the newer drivers were more responsive. I haven't used mine in a little while as I'm still settling into a new G5.
Finally, OS9's GUI was very simple compared to Quartz. As Quartz Extreme offloads more stuff onto OpenGL in hardware, a fast 3D card with fast access to system memory becomes more important than how fast the main processor is for the GUI. The GUI anymore, is a full 3D compositing engine, more powerful than the $100,000 3D video hardware I used to use 10 years ago! (GVG Kaleidoscope)