Okay, I might've brought it up before but it's the Bleeding Effect. It's when overuse of the Animus in experiencing ancestors' memories begins to confuse the user and overlap. People begin to mix reality in the present with memories of the past, losing grip of who they are or what they've experienced. Prolonged periods in the Animus can pose risks, but honestly I don't think it'll apply in our context greatly. I mean, we're already dealing with this in terms of this simulation here. People get memories from home that overlap with their realities here and have to deal with two 'yesterdays'.
Any signs of confusion from the Animus and I'll make sure we tone it down, or monitor sessions better to prevent it. But you deserve to know the extent of what it can do. You've, ah... met Clay before? Clay Kaczmarek.