Ask HN: Low-delay one-to-one livestreaming

I would like to be able to watch and kibitz online as a friend streams a videogame from her Windows PC, as we did before she moved across the country. She's tried Steam Broadcasting and Twitch, but they both introduce large transmission delays--10 seconds and up--which makes it frustrating to try to talk about the action onscreen. I understand that this is necessary for buffering and other overhead when you're potentially streaming to hundreds of people at once, but for one-to-one streaming, I feel like we can do better.

Is there a good (and not too difficult to set up) way to stream video from Washington to Kentucky with <5sec delay?