zeds zombies

It's called lag.
Zombies are server side driven so they will hit at the location in which the server believes you are currently at. This is why some times you get teleported during desync because on the server side your location is different than it is on the client side.

okey but my fps is high my ping is 3 and than lag is very rare

if i don't move is it to

Re-read what I said.
This has to do with server side lag and how client locations are reported to the server.