Lol man; are you sure it isn't the Animus? When you are close to dying those lines appear to show you are close to desynching. It's a graphical feature that looks like computer-like mess/pixels. The character model is also surrounded by this and the same effect happens when you 'blend' into normal people in the street.
I'm playing the game and having no issues
Edit: nvm; cool, glad you fixed it