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Mmh, drawing cycle delays for non accelerated items, it seems. What graphics card do you have? Do you perhaps use an unusual screen resolution ands refresh timing?
I have a dual screen configuration. Two 30 inch apple cinema display monitors. The graphics card is an NVidia GeForce 8600GTS.
The monitors are on 2560 x 1600 pixels which is meant to be its native resolution, at 60hertz.
I have never heard of drawing cycle delays, but then again the list of things i have never heard of is extensive.
Phew, that's a lotta pixels you're displaying there! What resolution is the comp(s) you're working in and previewing? Is the AE preview window scaled to 100%? Is the timeline on the same display as the comp preview window?
Could I suggest you temporarily disable one display entirely, then see if the issue still occurs. If not, it suggests some kind of display-card performance issue to me.
Yes, I agree with Andrew, two 30" displays is really pushing it even for the most powerful card. In my view you will not even have full acceleration on the second monitor as 256 MB/ 384 MB video RAM that those cards usually have doesn't allow it and barely leaves enough room to draw the basic Windows GDI+ stuff, even more so on Vista. Probably you need at least a model with 512 MB or 768 MB to get the full joy out of it. If it's realyl such an issue, limiting yourself to a single display seems the only option for the time being. You should create custom profiles in your NVidia desktop manger - one with both displays and one with only one display, so you can quickly switch between configurations when needed or even tie it in with launching a specific application (such as AE).
Thanks for the help and advice Mylenium and Andrew.
I don't think it is the screens, as I have tried it with one monitor, and with different smaller 19 inch CRT monitors, and even going to a different machine with different hardware, downloading the trial and playing it there.
I have tried timeline on the same window. The preview window is at 100% at full resolution. The playback of the video is fine. The current time indicator steps on anything - Anything as simple as a solid that moves accross the preview window over ten seconds. The ram previews themselves are fine and smooth whether it is the simple solid move, or a complex particle effect, makes no difference to the steppiness of the current time indicator.
I have run after effects as if it was in xp run as administrator, I have disabled all the vista memory wasters such as aero and superfetch.
I don't have the problem at all on the machine that runs XP. It's running a trail version, and I may have to deactivate and go over to that one for the sake of getting my work done, yet that is a shame as it is a slower machine.
To accomplish the same thing, select a layer and while it is playing back the RAM Preview hit the * key on the numerical keypad (or use the Fn key on a laptop.) That will create a layer marker at the places in time where you hit the * key.
- Jonas Hummelstrand
I actually don't have a problem creating previews or laying markers. The problem is the playback of the previews in the timeline. The previews themselves play smoothly in the comp window. In the timeline window though, the current time indicator does not. The synchronisation of laying markers is out too. This is out when doing the smallest and simplest of tasks.
Might I say I have read your helpful site before and found solutions to other problems I have had in the past there.