I am running Vegas 14 on Windows 10 and am experiencing crashes during rendering the video. Footage is AVCHD and I'm rendering mpeg 2 to DVD Arch widescreen format. I've tried 3 times and it always crashes part way through the rendering process.
I was able to render the audio portion without issue.
I've been using Vegas for many years and every version has the same issues.
It simply never renders well 100% of the time and it's frustrating.
This is not an answer to your question but I sure understand the problem.