HiDef streaming troubles

Anybody have trouble streaming hi-def? For me, streaming HiDef from both Qobuz and Primephonic is iffy at best, and it's getting worse by the day. I can stream CD quality with no issues but when I try to go above it, more often than not I just get silence, even though the worm does crawl happily across the screen.  As of today, my luck has gone from 50% to a solid Zero. Anybody have this trouble? Qobuz denies any problem with their transmission.  Quobuz declared my streaming ability fine, as well. Mytek checked out my Brooklyn BB and said it ran perfectly. I stream via Ethernet, too, not that who-knows-what WiFi stuff.