I have a Roku stick (4K HD HDR) and it is connected to my receiver (Sony STRDN1060) via HDMI and I never get any more than PCM stereo (download speed/bandwidth is about 30Mbps.) I have other devices hooked to my receiver same way via HDMI (Blu-ray and Xfinity Flex and get DD5.1, DTS5.1 fine.) Any ideal how to fix this? Thanks