Nerf the string zombie

I mean what can i say it's to overpowered.The gravity on the zombie is to much i think it should be nerfed.Reason:
-too op
-can get to high places too easy
-unfair when there are no players in the server
-and can combine with the mandness,knife blink etc to make it even more overpowered
I understand it's supposed to be for vip/admin but it should have limits the limits are broken everytime i get infected it's always that zm class plus she has got a long range attack and + a knife blink
I think it should be considered to be nerfed
Thank u for ur time have a great day
_Cigan:)