This is a serious issue if that were true. Anything higher than 48kHz can cause receivers to turn off their internal processing due to the audio source having high quality sound streamed in. And some receivers can't handle more than 48kHz in multichannel mode without having pops and clippings appear like my Marantz when selecting more than 48kHz on Windows sound settings.Response to my XMC-1 PS4 issue:
We could not duplicate this issue with our several AVRs and sound bars when connected to the SHARC processor. We did find though, in more close examination of the LG eARC stream that it is still slightly incorrect. LG C9 latest update FW marks the stream sample rate incorrectly for all PCM multichannel content. If the content is 48kHz it is reported as 192kHz and if it is 192kHz it is reported as 768kHz. Only stereo input is marked correctly for sample rates.
Assumedly LG did the eArc multichannel support quickly and did not bother refining the reported sample rates. Most AVRs don't care about it but it may be that yours does care about it.
In this FW update we have setup the PS4 rate as 48kHz which is what is coming in from PS4 when LG is connected."
The timing to the next gen output device releases are getting close and LG's slow track record of releasing updates will be of huge concern in this case. This kind of case needs a lot of people to report to pressure LG. Else, it will be like the elevated blacks issue that have yet to be fixed for people who had their TV calibrated. My goodness....