AI Actors idea

In the year of 2046, completely independent Artificial Intelligence are just part of life. They take place in most all jobs, even including management positions in open minded businesses.

But no where are they more prevalent and more visible than in the Entertainment industry.

AI turn out to be wonderful actors, if they are programmed to fully believe they are in the situation they act in, and are given designated lines that are fed to them through a program.

But what happens when the actors start to feel as though they are living in a reality that their characters live in? What if it gets where they can't separate fiction from reality?