Hey everyone I've been using a free Premiere Plugin called Daniel2 for a year now, and it pretty much doubled the speed for most of my renders.
Apparently it's not very well known, so thought I might drop in here, you can try it out for yourself to see how much of a difference it makes for you.
You can find it on Adobe Exchange or here https://daniel2.com/
I'm not exactly sure how it works, but it uses the GPU, and is somehow 1.5-2x faster than it's closest rival, which again alot of people don't know about, which is called Voukoder.
There's a couple videos on youtube about both, but nothing extensive, so just try it, maybe post your result, and give others the gift of faster renders.