All music plays back at 48khz regardless of quality

Just purchased Shield TV Pro and experienced this unpleasant surprise. 24 / 96 FLAC served from Plex is playing out at 48k. My receiver reports the sampling rate but not the bitrate. At least, for this format / test.

Mac Mini running PMS
Shield TV Pro, native Plex app
Yamaha RX-A700

TL;DR - But I found a goofy workaround. Using Plex app on iPhone, cue up same 24/96 FLAC. Then use Shield’s built-in Chromecast feature to cast from iPhone Plex to the Shield. Receiver reports 96k. Note - there will be two Shield cast options. I used the first one - the second one [I believe it had (TV) noted in parentheses] simply allowed the iPhone to control the Shield’s native Plex app. Thus yielding downsampled audio. Hope that helps others.

^ Update - nah. That “trick” doesn’t work any more.