I've had good luck with eARC without any intermittent issues. Of course, I'm only using it because my tv has two EDIDs, one that allows 4K video for my streaming box, and one that allows audio for my Blu-Ray player. So I have the streaming player connected directly to the TV and audio over eARC to the reciever instead of going through the reciever. I was pleasantly surprised that this works fine, but not surprised that it doesn't work for everyone.