4k MP4 (XAVC-S) format to Blu-ray
 

What's your workflow when going from the ax100 4k MP4 (XAVC-S) format to Blu-ray Disc
I can edit natively in Edius 7 no problem and want to output a file which something like TMPgenc authoring works can ingest and produce a blu-ray quickly.
I'm rendering a 2 hr soccer game shot in 4k directly with Tmpgenc Authoring works and even with my i7 980 it needs double real time encoding.
the cpu went from 20% up to 74% for a while then fell back down to 20% wish I could get it pumping at 95%
So anyone doing similar?