Audition grinds to a halt when I zoom in on a complex multitrack session.

Howdy.
I'm putting Audition up against a pretty powerful computer:
- 4 GB RAM
- Quad core at 2.4 Ghz per core
- All SATA hard drives
- nVidia 8800 video card
That said, when I get into a complex multi-track session (more than about 10 tracks with effects) and start zooming in tight, the program grinds to a total halt. The CPU usage on all four cores spikes to 100%, but the audio rarely drops out.
For example, in a recent remix with 30 tracks (and minimal effects), I had zoomed in to just a single measure, and it was taking Audition about 5 to 7 seconds just to respond to clicks and keyboard strokes. Once I zoom out, the problem magically resolves.
And you know...I seem to remember this happening back in Audition 1.5 as well.
Is this just me? I can definitely reproduce it on two entirely different (and powerful) computers. Anyone else had this problem and/or know how to fix it?

I use an ATI Radeon HD 2600 Pro with dual monitors and its certainly not a top of the range card nor as SteveG suggests should it be.
> Maybe it's just me, but could you please explain how a faster drive makes a difference to the performance when zoomed in? Because on the face of it, that makes no sense.
It could have something to do with the alignment of the planets rather than the faster hard drive but all I can do is give the facts, my observations and logical conclusions :-)
Zoom in for really close work with large track count recorded at 44.1k with a 7200 rpm drive and I would have an annoying lag of about 2ish seconds enough to really disrupt workflow.
Do nothing else but add a 10k rpm drive and make that my primary work drive - problem gone.
Think about the logic of it for a minute.
You are somewhere say in the middle of the song you zoom in (I'm thinking just now while I'm typing - which is novel in itself - that Steve you may be thinking that the lag is in the zoom - its not and that could be the confusion but I'll continue) and press play. AA has to load the tracks position the file pointers of all track at the beginning of the file then move each pointer to the position in the song for each track to your zoom point and then play the tracks.
Worse for 48k files and probably worse (can't tell cause I usually have heaps of edits) with heaps of slices as each is a virtual copy of the original track.
That's a lot of work and a lot of data to move around - I'm seriosly looking at the solid state drives with lower seek times.
BlairT you have some serious PC issues cause that machine should be coping without a problem.

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I use an ATI Radeon HD 2600 Pro with dual monitors and its certainly not a top of the range card nor as SteveG suggests should it be.
> Maybe it's just me, but could you please explain how a faster drive makes a difference to the performance when zoomed in? Because on the face of it, that makes no sense.
It could have something to do with the alignment of the planets rather than the faster hard drive but all I can do is give the facts, my observations and logical conclusions :-)
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You are somewhere say in the middle of the song you zoom in (I'm thinking just now while I'm typing - which is novel in itself - that Steve you may be thinking that the lag is in the zoom - its not and that could be the confusion but I'll continue) and press play. AA has to load the tracks position the file pointers of all track at the beginning of the file then move each pointer to the position in the song for each track to your zoom point and then play the tracks.
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