Vegas Pro18 - rendering at 5% CPU and less than 30% GPU

xai wrote on 1/23/2021, 2:29 PM

A simple render of 39 seconds takes over 35 minutes to complete using Vegas Pro 18.

CPU utilisation is at 5%
GPU utilisation averages around 35%

My system has sufficient resources for the render to complete faster, yet Vegas pro 18 is not utilising all/most available resources why not?

{See attached photo of the render with CPU & GPU utilisation)

OS Spec:

Windows 10 64bit Pro-1909 (OS Build 18363.1316)
X2 Xeon processors (physical sockets) E5-2630 @ 6 cores each (12 cores / 24 logical)
24 GB RAM ECC
nvidia Quadro K4200 graphics card driver 461.09 (added profile in RTX / nvidia manager)
SSD used for OS and Data

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xai wrote on 2/11/2021, 4:39 PM

Before you view the test below I am using the following:

Vegas 18.0 (Build 434) installed on a workstation running-
Windows 10 Pro Version 20H2 (build 19042.804) with -
24GB RAM and -
X2 physical CPU sockets each with Xeon E5-2630 CPU,
SSD disk.
GPU is nvidia K4200 driver version 461.40.

I also made changes to the Windows power plan selected High Performance and modified PCI Express Link State Power Management to "Off".

I also made changed to the default nvidia control panel, changes in the first video attached. These include:

Selecting "Use for Graphics and compute needs" option under Workstation
Selecting PhysX processor: "Quadro K4200" rather than [not] Auto or CPU option under 3D Settings
Selecting "Low latency Mode" to "OFF" under Managed 3D Settings made a noticeable difference in fps test from 1.5 to 2.3 fps.
Disabled "Enable video editing mode" under Desktop menu

First video goes over these settings

Second video is the render test

Vegas pro 18 build 434 still under utilises CPU the ask is to use more system resources such that render time is reduced. Benchmark 4k renders well over the expected 2-3 minutes and takes 4-5 minutes instead.

RogerS wrote on 2/11/2021, 6:37 PM

Very interesting. I noticed in file I/O legacy AVC doesn't seem to be checked anymore so you did solve the issue that was causing Vegas to crash with AVC files?

For usage the NVIDIA graph make it look like the GPU is between 80-100% overall- is it possible the CPU is waiting for the GPU rather than the other way around?

I agree your time is slow. What kind of time do you get in Mainconcept (CPU) mode?

xai wrote on 3/7/2021, 6:14 PM

There does seem to be an issue in the way Quadro / RTX GPU is treated by Vegas Pro 18 versus GTX 1650 of later in that the Quadro / RTX is not being utilised to the full potential.

Just tested Vegas Pro 18 with nvidia quadro M6000 12GB GPU (same workstation as the one used with K4200), and similar results despite Quadro M6000 outperforming K4200 there is little or no difference in fps, render speed.

In a support request, nvidia suggested Vegas looks at the source code used to utilise GPU.

RogerS wrote on 3/7/2021, 7:41 PM

Did you file a support request with Magix as well as with NVIDIA? Might be worth passing along any info you got from NVIDIA as well as your test results.

Also, run the Mainconcept benchmark when you get a chance to give a reference for what the time should be with your system. GPU should be faster than it.

xai wrote on 3/10/2021, 8:46 PM

Did you file a support request with Magix as well as with NVIDIA? Might be worth passing along any info you got from NVIDIA as well as your test results.

Also, run the Mainconcept benchmark when you get a chance to give a reference for what the time should be with your system. GPU should be faster than it.

Yes, no sufficient outcome yet, though nvidia is much more responsive than Magix. Worth noting my software spent has exceeded $10k with Magix and I wish I can get my money back now! The isse I am experiencing does look to be an issue with Vegas Pro since earlier versions too. I found an article here: https://techgage.com/article/exploring-magix-vegas-pro-16-gpu-performance/ though suggested changes by author do not work. I am still getting lower than 5fps using nvdia Quadro M6000 (spec here: https://images.nvidia.com/content/quadro/product-literature/data-sheets/11305_NV_DS_Quadro_M6000_FEB15_NV_US_FNL_HR.pdf) I am getting same fps and lower than on gtx 1650M.

fr0sty wrote on 3/11/2021, 12:41 AM

If it were an issue with VEGAS, more people would be experiencing it, yet the majority of us have fast performance with our Nvidia cards. My RTX 2060 in my laptop encodes 4k in real time.

Also, just because you don't see 100% utilization does not mean that you aren't maxing out your system... % utilization is not a good benchmark to use as to whether or not you are getting the most out of VEGAS. As mentioned above, there are other bottlenecks that can slow things down in your system, and even in ideal situations, you may not see 100% utilization anyway because that particular process may not require 100% of the GPU to pull off, and throwing more GPU at it may not produce better results.

RogerS wrote on 3/11/2021, 2:20 AM

The NVIDIA gaming/general purpose cards seem to work better with Vegas than Quadro and while TechGage speculated that was a driver issue, it's hard to say. I haven't seen any solutions specific to Quadro posted, but if I see any I'll post here again.

JN- wrote on 3/11/2021, 3:41 AM

@xai “Also, run the Mainconcept benchmark when you get a chance to give a reference for what the time should be with your system. GPU should be faster than it.”

I do appreciate that you have already put a lot of effort into this, but as RogerS has already requested please do the above for the reasons give.

So just do a FHD CPU render time test and then a GPU encode render time test.

Going back a few years, there were threads commenting on the fact that the far more expensive Quaddro cards just didn’t cut it in VP compared to others. I think that John Rofrano was one such. The Nvidia GTX 580 era. That simply may not have changed.

Measuring render times is a more productive way than eyeballing cpu and gpu readouts to get a handle on your system.

Example, if you did have a card that was doing HW encoding using the built in Asic, the render times would be very fast, but the overall GPU readouts might not show this.

Some oldish threads, Quaddro mentions etc ...

https://www.vegascreativesoftware.info/us/forum/new-quadro-m5000-very-little-performance-increase--101863/?page=1

https://www.vegascreativesoftware.info/us/forum/i-found-the-best-graphics-card-for-vegas-pro-12-0--97029/?page=1