Maybe this is interesting to some of you. I wrote a free and open source Adobe Premiere exporter capable of exporting x264, x265 and nvenc (h.264 and h.265) without the use of a frameserver. You can even queue render tasks.
It is twice as fast as a similar frameserver workflow.
NVENC encodes wil like 200-300 frames per second.
Get it here: https://github.com/Vouk/voukoder
I just wish Linus would test this on his most powerful rig.