No, when I hook up my PS4 to my tv, sound works no problem. When I do the hook up from the PS4 to the GCHDP to the tv and plug it into my laptop, I get no sound. Same when I do the hook up from my cable box to the GCHDP to the tv and laptop. No sound from that either.
I should probably note that last I checked, which was a couple of days ago, I can capture both audio and video with component cables on my PS3 no problems at all.