Well, some of them.
Revision3 encoded their mp4s in some strange way (who knows how, you can’t really talk to them), and in release versions of the firmware the video side was running 3-4 times the normal speed, thus getting wildly out of sync really fast.
Then WD added something to the beta firmware to try and fix that - and whilst it doesn’t go out of sync, it stutters really oddly if you look at the lips of the speakers (Like you are only getting 6 frames out of 24)
Very odd.