During rendering, CPU almost 100% (97% of this is Vegas); GPU is zero

Douglass-Ray wrote on 8/18/2023, 5:57 PM

Vegas Pro 19: When rendering with even the simplest effects applied, my CPU is almost always pegged at 100%, with Vegas accounting for 97% of this. No other process is adding to the CPU load. GPU is pegged at zero. I've checked that my GPU driver is up to date. My template is Magix AVC/AAC MP4. As I have liquid cooling, can I assume I'm not overheating the CPU?

Vegas 19, updated 12-26-22; Build 648; Windows 10 Pro

CPU: Intel i7-7700K CPU @ 4.20 GHz; RAM: 32 GB

Motherboard: MAXIMUS IX HERO; BaseBoard Version: Rev 1.xx

Graphics: NVIDIA GeForce GTX 1060 6 GB

Sound: VA2246 Series-0 (NVIDIA High Definition audio)

Comments

mark-y wrote on 8/18/2023, 6:23 PM

Many effects, especially the older ones, were developed years befor multithreading and GPU acceleration technology was a thing. If you'll list the exact effects, provide your system and MediaInfo, someone can help you verifty.

https://www.vegascreativesoftware.info/us/forum/important-information-required-to-help-you--110457/

Former user wrote on 8/18/2023, 6:36 PM

Sounds like CPU encoding where you would hope for 100% CPU use, and that becomes the performance bottleneck slowing everything else down, including your GPU FX. Encode Magix AVC NVENC

relaxvideo wrote on 8/19/2023, 12:49 AM

NVENC encoding checked at template?

j-v wrote on 8/19/2023, 5:17 AM

Can you give a screenshot your used rendertemplate??

john_dennis wrote on 8/19/2023, 9:10 AM

@Douglass-Ray It's time...

Processor Number i7-7700K

Marketing Status Discontinued

Launch Date Q1'17

Servicing Status ESU Notification Issued

End of Servicing Updates Date Sunday, March 31, 2024

RogerS wrote on 8/19/2023, 9:39 AM

i7-7700HQ (mobile) user here- if no CPU-intensive Fx are used and a GPU-enabled template (QSV or NVENC is used) your GPU will show signficant activity and CPU won't be at 100%.

Douglass-Ray wrote on 8/19/2023, 4:16 PM

Thank you for all your help, and my apologies. The solution to the CPU/GPU problem was obvious, but I kept missing it until you made me look.

Recently I had to reenter all my custom Vegas settings, and somehow managed to click the template without NVENC. When I went to the Render screen, I never even glanced at the template settings. When I realized my error and chose NVENC, the result was, of course, dramatic: Without NVENC, a single clip with multiple effects drove the CPU up to 100%, and didn’t use any GPU (0%). When rendering the same clip with NVENC (same effects) the maximum CPU load was 67%, and the GPU stayed around 21%. And the time was 16 seconds, not 56.

Thank you for pointing out what should have been obvious to me, but wasn’t.