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Sluggish preview on i7-950
I just installed VegasPro 9.0a-64bit on a:
i7-950
vista 64-bit
8g ram
ATI 4850 video card
lots of drive spaceI am experiencing very sluggish performance on my preview screen (unless set at “draft”). When looking at transitions, for instance, the preview will stall, then jump across. Also, my preview screen settings will change by themselves (from “full” to “half”, etc).
My old dual-core VegasPro8 set up ran much smoother and never changed settings, by itself.
I have tried all different settings within Vegas, regarding preview ram—but no difference. Vista is set to “best performance”, but I have also tried the other settings.
Does anyone have any idea why this is happening? I thought that this new machine would smoothly cruise through this HDV footage.
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6 Replies
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OK, after reading back on SonyCow, I see that the preview quality setting “auto-change” is a new Vegas 9 feature. After turning that off, my previews (at a decent Preview Full setting) run much better. Still a bit (surprisingly) sluggish, but now workable.
I think that I remember reading somewhere on SonyCow that a beefier video card would not improve things, as Vegas is CPU dependent? Is that correct?
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“I see that the preview quality setting “auto-change” is a new Vegas 9 feature”
That feature and a whole lot more are detailed on the very first page of the manual as well as in the online Readme file
I strongly suggest that all users go through this list to become familiar with the many new changes.“…a beefier video card would not improve things… Is that correct?”
That’s correct.
I know that apps such as Magic Bullet will take advantage of the video card but, AFAIK, that’s it for now. -
Hi Mike.
If I may ask, what does a beefier video card help with in Vegas?
Anything?
Thanks.
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Hi Norman.
As I said, unless you’re using an app like Magic Bullet, a beefier card does nothing for Vegas.
Here’s what the manufacturer of this app has to say:
In most cases, the Looks plug-in requires rendering to generate final color-corrected output. With host applications like Final Cut Pro and Premiere Pro, you can use Looks as a real-time color correction effect with the dynamic playback capabilities. With applications such as Apple Motion and Adobe After Effects, rendering is required to generate any output with Looks applied. In general, the faster the graphics card, the faster the rendering of media. NVIDIA cards are generally faster than ATI cards of the same level for HD or HDV projects.If you’re a gamer (which I’m not), beefier video cards will help performance and display but that’s the extent of my rather limited knowledge.
Hope that helps.
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There is a GPU-decoding plugin for NVIDIA video card users.
I haven’t tested it (I have an ATI card) but it claims that it can improve decoding of h.264 video up to x10.
About GPU-encoding see also;
https://www.tomshardware.com/news/badaboomgpuvideoencodingadobepremierenvisionnvidia,6259.html -
I seem to have improved my Preview viewing sluggishness issue by unchecking “Display at project size”, in Preferences/Video. It is still not great, but it is, at least, as good as my old Dual-core Veg8 system.
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