Much depends on your source video and how well it is matched to your project settings. What kind of camcorder is your video coming from and which settings did you select for your Premiere Elements project?
If you've selected the ideal project settings, there will not be a red line above your clips on the timeline until an effect or transition has been added. Mixing several formats of video can definitely drag program performance down.
If you are using an Opacity setting to cut from camera to camera, it's also likely the timeline needs a lot of rendering, indicated by the red line above the clips on the timeline. You should be able to improve performance by rendering the timeline (pressing Enter so that those red lines turn green) whenever you see a red line above your clips.
Take a look at some of the links in this THREAD. You have provided really good info, with just a couple of exceptions: knowing the embedded graphics chip, its driver number/date, the full specs. of the I/O, and the exact specs. of your source footage.
Note: an embedded graphics chip is not the best for Video editing, unless the chip is nVidia, or ATI. If Intel, the driver support is horrible, and can often cause issues, especially with re-draw times in the GUI.
To see if we can speed things up a bit, let's turn the Thumbnail Display in the Timeline to None. That will mean that your Clips will only display their name, and not any Thumbnails.
It's 2 MTS files (AVCHD) and 1 MOV file. Like I said, this mixture has never
been a problem before. Also, the one rendering that I did do took A LONG
TIME (another surprise, considering quad-processor and 6 GB RAM). And did
not appreciably improve the editing performance except for the 1st couple of
edits (not even edits, really: placeing control point, zoom operation).
Here's a surprise: doing the render took a long time, but creating an MPG
file (which obviously requires another render) was only a few minutes.
Is there another way other than Opacity swaps to cut from clip to clip? I've
had videos in this same series that had MANY more cuts (this one only had 2)
with no problems. Also note: the editing issues were there BEFORE adding the
Opacity swaps. Hell, it was almost impossible to add the Opacity control pts
to do the cut, the editing repsonse was ALREADY so slow.
That's why I wondered if the horizontal offsets permanently employed on 2 of
the clips had any effect. That was the only real "new" thing here. But like
I said, these were not dynamic moves. I offset the clips once for the whole
video. I would have thought that would be optimized.
Will turn off thumbnail (did not know you could do that, so that's a piece
of knowledge. I HATE the "thumbnail wait" whenever I zoom in or out).
I'm not at home right now, don't know specifics of onboard video. It's an HP
Elite machine, with AMD Phenom II Quad-Core Processor, but can't recall what
video. I'll invest in a card, but I still can't understand why the slowness
has SUDDENLY appeared, after projects were no problem. You can see all these
since I got the new machine here: www.chuckpuckettsongaweek.com; the latest
one is not posted yet (they get posted beginning of the week). These are NOT
genius cinematography. The 1st and the current one (4th) are the
multi-camera videos. Edited without incident.
Wait. I just realized one other important difference. The previous 3 camera
videos were 2 MOV files (from ZOOM Q3's) and 1 MTS file (Lumix). The problem
child is *1 *MOV file, 2 MTS files (Lumix ind Vixia). That's twice as many
HD clips. Would that cause such a horrible slowdown?
Without a doubt.