I can only speak from personal experience, but the latency added by encoding and decoding has had to be negligible, as we already had a really high RTT. And TV

I can only speak from personal experience, but the latency added by encoding and decoding has had to be negligible, as we already had a really high RTT. And TV's are hardly anything to benchmark against. They are designed to be cheap, and I'm sure most of them do it in software as well, as it's way cheaper. Nobody notices a 300ms latency in the image, as they don't have any inputs to measure it against.