I have also seen a dramatic change in rendering time using Vegas Pro 23. I just built a new system using an i14900, 128gb memory, RTX 3070, and rendering what would seem to be a very simple video (around 32 minutes run time) only using a few clips took over an hour.

I thought i would take the same clips and drop them into DaVinci resolve and render from there and was shocked that it completed in a blazing 2 minutes and 5 seconds.

I have been a Vegas user from back in the Sony Vegas era and this was disappointing to say the least, I am not doing anything out of the ordinary but there seems to be something I am missing. I use the default YouTube Use Case template and am only rendering at 1920x1080 30fps.

I had a thought it might be a Windows Defender issue but not sure how to mitigate any slow downs there if that was the case. I also thought of trying to do the render the same project on my previous machine to see what the results are there

Thanks for any suggestions, and please let me know if there is any additional info that I can share that might be helpful in troubleshooting this.

Here’s hoping,
Simeon

Can you give a clue as to what it is in the project that could be slowing it down?

You're welcome to also test the benchmarks in my signature with 22 and 23. We don't have much Arc data.

I will try running your benchmarks to see what happens.

Thanks!

I ran one of the benchmarks and here is my result:
Vegas Build 23- 302
Inteli9-14900k 24 | NVIDIA RTX 3070 | Codec NVIDIA NVDEC
Preview frames - 2
Dynamic RAM - 26153 | NVENC | Render Time - 03:49.492 | Render Glitches - No

Using Vegas for such a long time, and running into this rendering issue has been a little disappointing.
I tried a basic test rendering a single 12-minute clip using Vegas Pro 23 and the Latest build of DaVinci Resolve Studio and the difference was staggering to say the least.

12-minute clip render times:

Vegas Pro - 00:09:23.94

DaVinci - 00:00:49

This was using the out of the box basic 1080p YouTube output templates.
In my opinion something definitely feels wrong that this is the current state of Vegas Pro output rendering and this is coming from a long time "paid' user (I still have my Sony Vegas disks) and subscriber to the Vegas 365. The editing workflow has just worked for me over the years, but running into the slow rendering, especially on a new powerful computer build is concerning. I have also tried rendering to various drives to see if transfer speeds might make a difference but I am using NVMEs and it did not make a significant difference.

Thanks so much for the help.
Joyfully yours,
Simeon

Hi Simeon, thanks for doing the VP 20 benchmark. Based on this your system is seriously under-performing from what I would expect. See the result list and times for similar hardware including my own (13th gen i5 + RTX 2080 should be slower than your system).

You're sure the settings are on defaults (esp. file io) and there's no monitoring or other software that could be interfering with VEGAS?

Hi Simeon, thanks for doing the VP 20 benchmark. Based on this your system is seriously under-performing from what I would expect. See the result list and times for similar hardware including my own (13th gen i5 + RTX 2080 should be slower than your system).

You're sure the settings are on defaults (esp. file io) and there's no monitoring or other software that could be interfering with VEGAS?

 

Roger,
Yes, I was looking at some of the other results and it is a little baffling.
My tests are using the defaults. I even tried doing a fresh install of Vegas Pro 23, as well as a clean startup (holding CTRL+SHIFT, to reset Vegas to the out of box settings). No other DAW or video running at the time as well. I had an idea Windows Defender might be involved, so I might try bypassing it temporarily to see if that makes any difference. I also tried Running As Administrator but with the same results.

This is on a fairly fresh install of Windows 11 since I have only had the new computer up for about two weeks.
 

Thanks again!
Simeon

Great testing to start VEGAS with defaults. Looking at Windows task manager/performance (or HWInfo64) while it plays and renders you see high CPU clock speeds on all cores and plenty of NVIDIA GPU activity without any signs of thermal throttling?

You are on a recent bios for that CPU? Wattage limits are set appropriately in bios (not unlimited)? I spent a while tuning my system after I got it to balance heat and performance.

Perhaps try an NVIDIA driver cleanup and then the current studio driver?
https://developer.nvidia.com/downloads/cleanup-tool

Do you have an older version of VEGAS you can try the same VP 20 benchmark project with to see if the performance is better or worse than 23?

Great testing to start VEGAS with defaults. Looking at Windows task manager/performance (or HWInfo64) while it plays and renders you see high CPU clock speeds on all cores and plenty of NVIDIA GPU activity without any signs of thermal throttling?

You are on a recent bios for that CPU? Wattage limits are set appropriately in bios (not unlimited)? I spent a while tuning my system after I got it to balance heat and performance.

Perhaps try an NVIDIA driver cleanup and then the current studio driver?
https://developer.nvidia.com/downloads/cleanup-tool

Do you have an older version of VEGAS you can try the same VP 20 benchmark project with to see if the performance is better or worse than 23?

Roger,
I did see a recent NVIDIA update and the Cleanup tool is great as I have used some other DDU programs in the past. Also, motherboard BIOS and such looks good and even when the CPU is running in the upper 80% use, my temps never get into the 90 degree Celsius zone, thanks to be Quiet fans and AIO ;^)

One thing I did discover was that some of the templates, especially the Use Case | YouTube seemed to default to the MAINCONCEPT driver instead of using the NVIDIA one. I will take a look at the benchmark test again and double check to see what driver this was set to. I will also try my 12-minute clip test again making sure the NVIDIA driver is selected.
Getting closer!
Joyfully yours,
Simeon

@Simeon 

In my opinion something definitely feels wrong that this is the current state of Vegas Pro output rendering

You're not on your own in thinking this, I just made a comment on this post, - https://www.vegascreativesoftware.info/us/forum/rendering-v23-vs-v22-gpu--150045/#ca944090

Rendering V23 vs V22 GPU,

V22 is rendering 30% faster than V23 using identicle settings. There is something in the V23 pipeline slowing things down.

My reply

@andyrpsmith I made a post about slow rendering speeds & is this reason I haven't upgraded, I thought it was because I had an AMD CPU that doesn't have IGPU but you have an Intel CPU 🤷‍♂️ (3 or 4 others also mentioned slower speeds)

https://www.vegascreativesoftware.info/us/forum/vp22-vs-vp23-rendering-speed-vp23-slower-than-vp22--149593/

-----------

It would be nice to get some official recognition of this rendering issue, I'm pretty sure I've seen other posts reg rendering problems.

The "head scratcher" is that a few are saying the rendering performance is better.... that hasn't been the case for me. And personally, I think this also affects the timeline performance (moving clips around) too.