J'ai eu ma réponse désolé. ;)
<<Notes
The invincibility cheat is bugged and may turn off randomly during gameplay, particularly when entering dead-eye, fast traveling, or hogtying NPCs. This is most likely due to the fact that dead-eye and the act of hogtying grant you temporary invincibility overriding the cheat, but do not re-enable the cheat after it is done. >>
Comprendre ici qu'elle peut se désactiver aléatoirement...sympa....