render speed slower with new builds

Rob-McMillan wrote on 5/4/2023, 11:23 AM

I have a Dell XPS 15, i7 processor, NVIDIA graphics card 3050 Ti. I'm running Vegas Pro 20.0.

For some reason, versions of Vegas Pro 20 after build 139 render much more slowly. I don't know why. I have noticed that there is the additional option of "RAW processor to use" under Preferences, File I/O. But I've tried all sorts of combinations altering the settings on that dropdown menu, as well as "hardware decoder to use," and even "GPU acceleration of video processing" under the video tab. But all recent builds of Vegas (after 139) render at 1/3 the speed of my old version.

Does anyone have any suggestions?

 

Thanks

Comments

Rob-McMillan wrote on 5/5/2023, 1:02 PM

I have narrowed the issue down to COLOR GRADING. And it actually happens on all builds after 214.

On earlier versions of Vegas, applying color grading only slightly slows down render speeds. But any build after 214, applying color grading slows down render speeds immensely. Interesting, only color grading seems to have an effect on render speeds. Adding color balance, brightness contrast, etc. doesn't have as much effect on render speeds as color grading. What happened with build 326 that caused this problem?

Reyfox wrote on 5/5/2023, 1:45 PM

The latest build is 403... have you tried it?

Newbie😁

Vegas Pro 22 (VP18-21 also installed)

Win 11 Pro always updated

AMD Ryzen 9 5950X 16 cores / 32 threads

32GB DDR4 3200

Sapphire RX6700XT 12GB Driver: 25.3.2

Gigabyte X570 Elite Motherboard

Panasonic G9, G7, FZ300

Former user wrote on 5/5/2023, 5:59 PM

On earlier versions of Vegas, applying color grading only slightly slows down render speeds. But any build after 214, applying color grading slows down render speeds immensely. Interesting, only color grading seems to have an effect on render speeds. Adding color balance, brightness contrast, etc. doesn't

@Rob-McMillan Do you see the slowdown in timeline playback as well?

Rob-McMillan wrote on 5/5/2023, 11:12 PM

I've narrowed it down even further. In the past, when I've added effects to my events, I've added LUT filters, sharpening and color grading as separate effects. For some reason, in later builds of Vegas, I need to apply the LUT filters from WITHIN the color grading option. This simplifies the work flow, and makes the render much faster. Unfortunately, it means many of my older projects I need to rework, but at least I see what the problem is. I'm not sure what changed after build 214 to cause this problem, but at least I've identified the issue. Thanks!

J-Toresen wrote on 5/6/2023, 3:37 AM

@Rob-McMillan

You should report this to the developers. Or maybe @VEGASDerek will respond to what you have discoverd. .

Jøran Toresen