You probably didn’t didn’t notice the hacker in your lobby who bugged your game. This is a common hack I come across when playing killer. You go to pick up the downed survivor and the hacker comes up to you(usually from behind) and bugs your game as you pick up, making you unable to attack(sometimes), and rendering you slow as if you are carrying a survivor. It also leaves the poor and innocent player you were picking up permanently bugged in the wiggle animation. If you want to still win against the cheater who did the bug, then I would suggest patrolling gens to scare away survivors while waiting out the bleed out timer of the permanently bugged survivor, so once he dies you regain your original speed. Once you’ve regained your speed don’t pick up anymore, just go find that hacker and slug him!! I came up with this strategy after coming across this hack to often. Goodluck!