Ok, the articles use adobe Premiere, with hardware acceleration, (should be still applicable to Vegas) to show the benefits of maybe using a not so expensive Intel system vs multi core high end system for sequential rendering.
May be of use to anyone considering upgrading their system.
https://m.youtube.com/watch?v=ofdh-THQFpE
https://www.gamersnexus.net/guides/3310-adobe-premiere-benchmarks-rendering-8700k-gpu-vs-ryzen