Try a benchmark and see if the system's working right? It also has recommendations for render settings which could be useful. Mainconcept and GPU encoding should have very different times: https://docs.google.com/forms/d/1Exbi4K3hbxw6snJuisR1ble-0tCPVNcIcNnx0BAtSIM/

I'd assume your computer will be busy rendering and not have much in the way of resources to spare during the render. Doing other activities at the same time may significantly slow it down.

Just out of curiosity, as it apparently can make a positive difference (although, I have no personal experience with this, but others on here do), do you have NVIDIA’s Game Ready drivers installed or Studio Drivers for your RTX 3060Ti? As it appears that VEGAS Pro likes NVIDIA’s Studio drivers.

@kyle-pitts
For some help can you show us here 4 screenshots of your Vegas Pro 20 installation?
1. Screenshot of Options/Preferences/ Video
2. Screenshot of Options/Preferences/FileI/O
3. Screenshot of the renderoptions to choose for your project
4 Screenshot of Help/Check for Driver Updates?

Preferences FIle I/O. I have also tried it with no option enabled for the legacy as well as hardware set to non and auto.

Preferences Video. I have tried with and withoug GPU acceleration

Render As options

Check for drivers is current

@RogerS  Can I force it to allocate more resources to render faster? I reran it last night and I have 64 GB of ram and it's only using about 6gb to render.

@Former user  same settings as far as I can see, nothing changed with OBS other than probably an OBS update but none of my settings changed.

@kyle-pitts
Thank you for the info you gave.
It looks like that the Intel Graphic Processor you have is not allowed to show up in your hardware.
If that is true you have to allow it in the BIOS and when it succeeded you have to reset Vegas following exactly this: https://www.vegascreativesoftware.info/us/forum/faq-how-can-i-reset-vegas-pro-to-default-settings--104646/
Your hardware will be stronger than and another rendertemplate with QSV is available (on my hardware the fastest renderoption)

No, you can't force Vegas to use more ram that it needs. I also have 64GB ram and it never needs close to that. The most I ever see is when using AI-enabled Fx.

In general for best performance keep the GPU on in preferences/video and keep file io to defaults.
I strongly second enabling the iGPU if there is one available as QSV works well for decoding (and even encoding/rendering).

See how the system works on the benchmark compared to similar hardware and you can isolate the performance impacts of different settings.

For stuttering my guess is it's an issue with OBS settings. One thing to try is setting key interval to 1 rather than 0 which should help with playback.

@kyle-pitts Looks like your problem is that you've disabled hardware decoding by checking both legacy boxes in the i/o screen. Definitely uncheck legacy-avc and select your Intel uhd630 for decoding. Make sure you also have a recent Intel graphics driver installed... I've used 101.2115 with that igpu which I got here since Vegas driver download does not link to Intel. Unchecking legacy-hevc might also help with that igpu... if you're using hevc 4:2:0 footage... try it both ways.

I tried it with hardware encoding, w/o it, with each type of legacy. Here's with the NVENC encoding enabled right now.

Where do I find the UHD630?

@kyle-pitts Hit record on your OBS for 1 minute, upload it to a file sharing site, maybe it is your file that's to blame. You have a 10 core CPU, you most likely don't need GPU decoding for a 1440P AVC, you might have a mild slow down due to not using GPU decoder, but nothing like this

UHD630 should show up in preferences/ file io in Vegas. If it's not enabled, enable it in your bios and then it should appear in device manager under display adapters. That will get you QSV decoding.

The render times don't mean much to me as I don't have any reference for your project. Try a standard project.

For OBS the settings really matter so take care with them including keyframe interval (shorter is better; default of 0 is very long).

Where do I find the UHD630?

1

2

3

ugh still no luck. I was able to turn on the intel 630 igpu and run a test, it's about the the same

It took almost 30 min to render a 4 min video.

The 1 minute video rendering is taking about 10 minutes.

@kyle-pitts- Did you reset Vegas after turning on the 630?
Show now again screenshots of Options/Preferences/Video, Options/Preferences/File I/O, Help/Check for Driver Updates and your (customized?) rendertemplate.

@3POINT I totally didn't catch that at all. I've made a custom template now specific to my recording and I'll try again.

@j-v  I did do a reset after i enabled the igpu. But I think 3Point was on to something where the option I was choosing wasn't right in it's dimensions.

I'll test it out

@3POINT  that looks to have fixed it. Thanks for catching that. Once I set the custom resolution now what was just taking me over an hour for a 12 min video is now back to taking about 15 minutes.

@kyle-pitts the none matching resolution only couldn't cause this extreme slow down. Make also sure that framerate matches, depending on the resample mode settings of the project, previewing/rendering with/to a different framerate can extremely extend the rendering time and can causing a stuttering preview. Make sure when setting up a project that project settings are matching the used media.

Also I recommend the use of Voukoder for Vegas to render, instead of rendering with the Magix AVC/HEVC rendertemplates.

What about playback? Is it better with the iGPU?

@RogerS the preview does appear to be smoother with the ipgu