I've noticed this since I updated Skyrim and installed all 3 dlcs.

Most voices in the game aren't as synced as they were before.

Has anyone else noticed this?

I don't know what you're saying, but I know that after I got all 3 DLC's and was recently watching my brother play and Esbern's voice changed mid-sentence from a higher voice to an extremely low, bass voice. It was extremely awkward but also funny at the same time.

Their voices aren't syncing with their lips if that's what you mean.

I notice that their lips move slower than what they are saying.

Never did this before.

Not anymore they aren't but they used to be.

I remember because I was impressed at how much voice acting there was and how their lips were actually synced with what they were saying.

It wasn't like an old kung-fu movie.