Move the Lips of NPCs during Dialog

I just got to Yorn on my alt to playthrough the campaign and noticed (for the first time) the npc’s lips don’t move during dialog. How much effort for that take to make that happen? I can imagine it would be a lot of effort to put in motion for something like immersion.

It isn’t something Amazon can do; this would be a Smilegate update and overhaul which would take a lot of effort. Remember this game was done by a “smaller” company and released in 2018 (with production beginning in 2011/2013).

Smilegate plans to work on bugs, balance, and considerations to move to Unreal 4. They will likely focus that before minor lip syncing for voice work.