[EDIT] I see a particular post was pulled, however with an abundance of apologies to the OP, I'll leave this one reply up for informational purposes.

Projectsettings don't matter,

Project settings below the [hr] DO matter, and quite a lot when it comes to render time dependencies.

For instance, Good will render up to 15% faster than Best, but will completely wreck any interlaced material you may Resize, along with not choosing a deinterlace method.

So yes, for the purposes of the OP's comparison, "Project Settings Do Matter."

Please try not to overgeneralize your thoughts.

@Bazim I think perhaps you are not comparing apples-to-apples. I get the same render time results between VP16 and MS16. @Musicvid points out please check you have both programs set identical, and if you still get different results, post your project settings from both programs, render format templates from both as well as the source media specs (using Mediainfo in text mode).

Oh OK I think I found the problem. I have in Vegas Pro project settings Resample mode: Disable Resample. And in Movie Studio i don't see it here so i forgot to click on properties and disable resample. When I've done this. The render time of 1 min same 4K@30 CLI was 1:10 for Movie Studio and 1:11 for Vegas Pro.

@Bazim well there you go, glad you figured it out.

We're you changing the frame rate on the timeline as well? That would explain it, or if you had Resample On always.

Resample On is always default in Movie Studio i think.

[EDIT] I see a particular post was pulled, however with an abundance of apologies to the OP, I'll leave this one reply up for informational purposes.

That was me, and I pulled back my post because you were 1 minute earlier than my comment and to make it not too difficult for the OP I deleted my comment.
BTW. Your quoted sentence was one of my statements there that I keep holding.
I think you don't use VMS 16 nor VPro 16 because otherwise you did not say that kind of nonsense.
It is my experience ( and not alone mine) that if you put a certain file on the timeline of both programs it renders always the same, within the same time and with the same filesize exactly, if the same template is used for rendering and unless the projectsettings .
In VMS 16 you don't even need to specify an advanced rendersetting if you use Make Movie/Save it to my Harddrive/Mp4.
And from each projectsetting it is always the same render result.

OK I think I found the problem. I have in Vegas Pro project settings Resample mode: Disable Resample. And in Movie Studio i don't see it here so i forgot to click on properties and disable resample

So, the OP found different Project settings, and making them the same made the problem go away.

Your point, j-v, one more time, is ?

Maybe we can realize a larger common perspective by sharing, rather than contesting?

Nah.

The difference between VPro and VMS is that in VPro resampling setting is part of the projectsettings as it is not in VMS. Normally projectsettings doesn't influence rendersettings, only in VMS when you use the renderwizard for mp4, VMS will Set Resolution and framerate according the projectsettings.

But normally the rendering speed between VPro and VMS should be equal under the same conditions.

Thanks again for sharing, 3Point.

Not only is it appreciated, I learned something.

Historically, project settings below the line can and do affect the output, including render times at different settings.

But normally the rendering speed between VPro and VMS should be equal under the same conditions.

Yes, I've always assumed that, except for the initial release of VP10, when they made some big changes under the hood, including the proprietary avc codec.

"Historically, project settings below the line can and do affect the output, including render times at different settings."

This is still the case. The upper project properties do not affect rendering (in fact these upper settings will automatically switch to the render settings once the render process is started).
The lower project settings will affect rendering in certain cases.

Your point, j-v, one more time, is ?

I had no point, because after less than 1 minute I pulled my answer back to overcome this sort of discussions that don't help a first time forum user.
A user who stated this: "1 min same Clip with same render/project settings (4K@30)" I than may assume he did not alter default settings of a program intentionally and than makes his question.
BTW, my answer was a little bit longer and why you did quote only 3 words of it I can only guess, but that is not a kind of help for the OP.
The default settings of the programs, also the ones below the line of the projectsettings are the same with VMS16 and VPro 16.
In VMS 16 the switch settings of a videofile in a new project are always this

and only when you are during a project changing the fps projectsetting to a not default one, f.i. 50p to 20p, the videofile settings for the switches change to

Hopefully you understand my bad writing in a for me strange language because als ik het in mijn eigen taal zou doen zou je er niks meer van begrijpen, maar sommigen hier gelukkig wel.😄
This is my last commend on this subject.