Vsro files char movment bug need help !

i made p-server with vsro files every thing working fine just one problem

when i run with my char it back forward for sec then it back again to where

it was while running idk how to fix this or where is the problem is it from

the client or the db

i have only that bug but nothing else i test the game many time even on my pc and vps idk what is wrong

as i know is fron navmesh or mapinfo.mfo (data.pk2)