I actually had the opposite: it seemed to work OK until it suddenly stopped receiving video entirely. (though oddly I could see the input being sent when I looked at the computer it was running on) 2.4ghz was actually much more successful for me, though it ended up having hitches every so often. And when you're trying to play Dark Souls or a rhythm game, you don't want hitches. I spent the time to get everything hooked up via ethernet and I don't see any more issues, even at the high quality setting for streaming.
Though maybe my experience is affected by the router I have. (which is in AP mode and I have a custom firewall)
Though maybe my experience is affected by the router I have. (which is in AP mode and I have a custom firewall)