So oddly enough I'm now having this problem. Have been updating HereSphere and Oculus, so no major jumps in versioning. Seems to have started about 2-3 weeks ago, and same scenario, only starts freezing when BT headphones are connected. Tried 3 different pairs and they seem to all do this, though they're all using LDAC so I haven't ruled that out. Very strange indeed, not sure what else would have suddenly caused this, or what I can do to fix it. Maybe full reset?
Just to add, half the time when it's freezing during playback, if I advance to another file I get an error that the file's not supported or that the engine is currently dealing with another file, etc.
*Looks like this is popping up recently for a few people as well https://communityforums.atmeta.com/t5/Get-Help/Problem-watching-videos-when-conn... *