player is Much Faster in dedicated Server than in editor ( sub-stepping is enabled and in the editor , the speed is stable no matter how much the fps is)

Hi ,

I Use AddForce to move my player (a custom car) around , it works perfect and every thing is fine for a multiplayer game when I test it in Editor(as listen server) the movement is 100% framerate independent. however when i Build for server and client and i join to the server , its no longer framerate independent , the higher FPS the faster the player moves.

sub-stepping is enabled
tick physics Async is enabled

Do I have to do anything to make physics in the dedicated server Framerate independent ?

please Help I have been struggling with this like for a month ,

thanks for any help