Well, the audio shown is correct. What is strange to me due, is why the Mid setting will only give 2 ch.
You are talking about the video now? the problem is the audio. 600MHz is not needed for the audio. If you are referring to the HDMI cable that comes with PS4 Pro. It ofc supports 600MHz
If I come off as snippy or anything like that I don't mean to. I just don't know why you are giving me the basics

Anyhow, now that be both know that we know the basics

I have something new to share
Today, I changed settings on the PS4 Pro. Nothing related to audio directly, but. When showing 4K HDR content at 60Hz. PS4 Pro changes Color format from RGB to YUV422(420) because of bandwidth limitation
The default setting for this is Auto.
When I changed from "Auto" to "YUV420" this morning I haven't had any issues that I've notice.
Also please look again at the screens from yesterday, you will notice that when AVR-Key is set to
AUDIO UP: the Color: changes to YUV420 and the Audio: to 7.1 ch and when
AUDIO MID: is used on the AVR-Key, the Color: changes to YUV422 and Audio: to 2.0 ch...
you follow?

there might be something fishy going on here

?
so am just guessing here. that the auto setting cases issues. if you don't hear back from me, this was it
BTW, do you know why I had to pay tax and customs for my AVR-Key? I don't believe that was mention ANYWHERE when I bought it
Hello,
Yes HDMI cable that comes with PS4Pro is ofc 600MHz, but ofc when using AVRkey you need one additional cable, so the fact that one cable is known as good doesn't mean we have certitude on the other.
And since you said you tried 1m cable and PS4Pro supplied cable is not 1m and since 1m is not recommended for 600MHz, it's my duty to tell you that

The fact that picture doesn't dropout, doesn't necessary means your cable at AVRkey output is good enough especially when you say that by lowering from 4K60 4:2:2 12b (which is 600MHz) to 4K60 4:2:0 12b (which is 450MHz) it helps on the sound issue.
This being said, the slide switch or GUI settings result is puzzling and i forwarded to our guys to check it. So that is under investigation already or will be in next hours.
Please understand the product is new and will get a few updates before being rock solid for all setup. The guys are already into serious work on the DD+.
Regarding import tax, well, it's mentioned in the T&C, that little check box you have to click before confirming order. Of course, no one reads that, but globally, it's the same from any foreign places you would buy from.
The reason is our world still have governments, borders and custom inspection that have to pay back their national debt, so they will charge you import tax when you import goods, it's the same for everyone in the world. Just more or less tax applied based on the financial situation of your country or their ongoing protectionism rules

In our T&C we also explain that DHL Express which is the most expensive and fastest service, usually have the highest import charges > this is why only people in a hurry or company use it, as company can get some tax back, like VAT.
EMS will be slower but have a bit less tax usually and Post Office will be cheaper and usually have the less tax but it's extremely slow.
Last but not least, we also explain in our T&C that buyers have option to enter special instructions for delivery when purchasing, this can be done when you input your delivery/billing address, there is field for special instructions.
So if one have any specific needs for a defined declared value, he can enter his request there. Please note that this practice is not well accepted by many custom inspections and while you can save some $ with it, sometime, custom inspection can re-evaluate and charge you even more.