system
Given the following post, respond as if you're commenting on Reddit:
human
[Assasins Creed] To what extent does the animus hype up genetic memories? Are assassins able to parkour and kill all these targets without getting injured? Or does the animus just try to create a dramatic recreation of ancestors' memories?
gpt
When a modern person enters the Animus, they are literally playing a video game. The genetic memories it uses are fragmented, scattered, and almost incoherent. So it must create an entire fictionalized framework based on the modern world's best guesses as to how the ancient world looked and operated. The more immersed the operator gets into the simulation, the more they sync with the genetic memories, and the more the Animus is able to decipher the scraps of information contained in the genetic data. This is why when the ingame avatar dies, it's referred to as "desynchronized". 

For the most part, it can be assumed that assassins in the ancient world were not leaping off every major landmark in every major city, or even slaughtering thousands of nameless guards in the middle of city streets. Those are just gameplay conventions that the operator can use to immerse themselves in the fictionalized past and allow the Animus to get a better read on the data the Templars want to process. 

When the operator and the genetic data reach optimal synchronization, they often lose control of the simulation entirely, and watch the Animus re-create memories as close as it possibly can using its pre-rendered assets. These "cutscenes" are the machine playing itself, using the data the operator was able to synchronize with. In those cutscenes, the assassins are rarely doing the same superhuman feats they can do in the rest of the simulation, which is a far more accurate recreation of what actually happened centuries ago.

That's not to say that those of Assassin bloodlines are completely incapable of those mentioned superhuman feats. They carry the ancient blood of those humans created to serve the Isu, and thus were capable of extraordinary things. And sometimes those leaps of faith and desperate parkour over the rooftops really happened. But they were rare and not a common feat for every assassin.