It’d be nice if we can collapse the 3 threads into an “official” bug thread. Is that possible?
I’m crossposting a bit in the meantime. I’ve put test files and mediainfo details in those other threads as references.
The problem, I believe, is more Roku than because the audio delay problem exists on the Roku Media Player channel as well (local file playback and DLNA). I reported to Roku Support and they took a bunch of details so it might help submitting a ticket over to them directly for more attention.