The term “desync” refers to the experience of feeling off-sync with the game, such as delayed movement or erratic shooting from enemies
Desync occurs when your computer’s connection speed is too slow. The game has a tendency to not only waste time in loading each new section but also disconnect you and puts you back at either the start of a level, checkpoint or previous room if your connection gets disrupted. If it were on facebook, we would say that it hacked you off!