Something I’ve observed - as others have already mentioned as well, I do encounter different AV sync depending on output resolution/frame rate. However I think there is a drawback to the current approach. Non-passthrough playback is always in sync (for me at least, I don’t know if others observe the same). If latency settings are applied to tune passthrough sync issues, non passthrough audio (such as AAC or FLAC) in turn becomes out of sync.