I was wondering if you could encode on 1 pc and then stream to twitch on another pc. In a perfect world, you could just NDI plugin but that just sends a stream of a video to another pc. Then you would start streaming from that PC. View the thread it has good info on the subject. I thought an updated one would be good.
A 2013 thread details this well: https://obsproject.com/forum/threads/separate-computer-for-encoding.5064/
A 2013 thread details this well: https://obsproject.com/forum/threads/separate-computer-for-encoding.5064/