I've heard this is relatively normal, I have several components connected to my recieve with optical cables, and they are set to PLII. At times, when the sound goes out momentarily for scene changes (in video games) or on DVDs from the menu to a feature, there is a 1-2 second delay while the reciever re-detects the optical signal and codes it to PLII.

This delay causes the first 1-2 seconds of audio to get cut, which can be noticable if those seconds feature dialogue. In games, it is very noticable because the system is constantly loading new audio tracks for new scenes and such.

Is this normal, and if so, why does it happen?