ARC Channel Support

ahh, I said that because the biggest difference is that HDMI can pass higher-resolution audio, including the formats found on Blu-ray: Dolby TrueHD and DTS HD Master Audio. These formats can't get transmitted across optical.

You have a unique set-up with your TV. I've installed a lot of home theaters for customers, and never had a reason to bypass their receiver. I hope you get your problem cleared up.

We have our audio set to "HDMI Audio 7.1 Uncompressed", our system is 7.1 and sounds great just worried about the lag caused by going through a receiver like the Panasonic manual recommended against because some receivers can add a few frames of lag. We
also have Optical Audio OFF and the Bitstream Format is set grayed out.

The 24Hz is under Video settings not Audio settings and kinda surprised that would create lag in a multiplayer game, it shouldn't affect a game at all or at least that's what I would have thought.

That doesn't change our problem though which is the audio quality if we hook the XB1 direct to the GAME port on the TV.

Our Panasonic 60" 3D plasma TV says it's designed for gamers. The ports on the back are marked as follows;

HDMI-1

HDMI-2 (ARC)

HDMI-3

HDMI-4 (GAME)

Oh, and I incorrectly said the game port was HDMI-1 in my original post, I forgot which was which. I knew it was at one end of the row.

Anyway the TV manual says "Plug a gaming console into the HDMI-4 (GAME) port and select GAME CONSOLE as the input device type in the TV's menu that this TV is designed to switch off all extra processing singing the signal virtually direct to the screen,
combined with a 240Hz signal rate this provides monitor-like speeds with only 12ms of video lag in a massive 60" 3D true-glass plazma screen for a truly immersive gaming experience.

And it is! Games like COD rock on our TV!

The problem is the manual also says that if you are using a receiver that you should connect your game console direct to the TV's GAME port and an ARC certified cable from the TV's ARC port to the ARC port on a receiver. This allows the TV to pass the sound
signal back to the receiver via the ARC channel. While going through a receiver first will NOT increase the TV's video lag, many receivers themselves will add anywhere from 2 to as much as 16 frames of input lag as they pass the video signal through them before
the signal ever gets to the TV.

On our XBox 360S we was able to hook it up in the way Panasonic recommends and was getting Dolby 5.1 digital at the receiver (I don't think the XB360 could do 7.1) but on both of the XB1's we have had all that we end up with at the receiver is 2 channel
stereo. Our girls friend brought over a Play Station 4 the other day and we tested it and was getting 7.1 Digital Surround Sound. So since the XB360 was working with Dolby 5.1 and the neighbors PS4 is working with Dolby 7.1 we know that the issue is with the
Xbox One and not our system. So to get Dolby 7.1 from our Xbox One we have had to go from the XB1 to the Receiver and then from the Receiver to the TV, this gives us great 7.1 sound but now we're concerned that we're getting lag from the Receiver as mentioned
in the TV's instructions.

Back in January an XB1 tech said they knew about the issue and was working on a fix, but have they fixed it yet? Our entertainment system is large and somewhat self-enclosed in a cabinet so I don't want to go to a lot of trouble to get back there to swap
cables around only to find that they still have not fixed the issue.

Does anyone know if they have or not?

Yes even CNN's weekly "New Tech" show called Microsoft out on the false advertising that the XB1 had "pass-through" when it didn't back when it came out. CNN didn't count it as being pass-through either since the unit has to be totally on for it to work.

We would love to hook ours up that way to save having to switch inputs on the Surround Sound receiver if the XB1 worked that way but the last time we tested it back last fall when we upgraded from our original XB1 500Gb to the XB1 Elite 1000Gb it still did
not pass-through so we don't (and wont) have it hooked up that way until they fix that so it will pass-through the HDMI signal when the XB1 is off, or at least in low-power standby.

My setup for 5.1 and no lag:

XboxOne HDMI to "Game" port on receiver

From receiver "Video Out" (HDMI) to ARC on TV.

I had major lag until I went into the xbox audio settings, and unchecked "Allow 24Hz"....or whatever boxes, and set the Xbox to 5.1 with no compression.

On the receiver, I adjusted the sound delay a bit. I also run the receiver in PCM which gives me no audio compression, and a nice rich 5.1 sound.