"Break" is not a term I have heard associated with video editing. You will need to explain in video terms before anyone can offer help.

Sadly i have no clue what to call it. Do you have a term for it?
For me at least its broken. That's the reason why i used the term "break"

The capture clip is in 1080p. I've tried capturing in 2560x1440p as well but sadly nothing changed.

I've reset the cache of the software and reinstalled Vegas Pro but it did not change. Tried making a costume rendering option to se if it fixed the issue but sadly it did not.

On the original video file everything is fine. if i simply just drag the file and render it that's when this happens.

Use OBS instead. Instructions are on the forum.

Use OBS instead. Instructions are on the forum.

Do you got a hyperlink to the topic?

Looks like they are referring to the jittery image. Make sure your project settings are the same as your capture settings for shadowplay, so you want your screen resolution (for me it would be 1080p, 1920x1080) and 60 frames per second (or 59.94). Also disable resampling, then try to render it again.

Then also make sure your render settings match that. 60 frames per second (or 59.94) and your native screen resolution or desired output frame size (1080p, 4K, etc).

Use OBS instead. Instructions are on the forum.

Do you got a hyperlink to the topic?

It's in the FAQ number 36.

https://www.vegascreativesoftware.info/us/forum/vegas-pro-faqs-and-troubleshooting-guides--104787/

kristoffer-nagy, do you still have this issue? fr0sty gave a good advice. To me it looks like the main reason is mismatching field order/interlacing settings between the footage, the project settings and render settings.

I would just add to that advice: by default, Vegas Pro 14 has the interlaced preset in the Project settings ("Field order = Upper field first"). Try to change it to "None (progressive scan)" and also change the render settings (customize template) to using also "Field order = Progressive". That possibly might be the case and you could be perfectly fine with Nvidia Shadowplay.

You can also double check the media settings in the timeline or in the project media in Vegas Pro: right-click on the video clip/event (your imported footage) -> Properties -> Media (tab) -> Field order - should be "None (progressive scan)" (if you are initially capturing your footage as progressive).