How to fix RemoteEvents Delay ?

Hello there, So I've been working on a magic game where you can shoot a magic ball from your hand it work perfectly but sometimes the delay become a second if there's more then 1 person in the server and sometimes it just spam Should I change RemoteEvents to RemoteFunctions ?

There is no possible way to fix this, it is all on your Internet and others Internet and rarely the script itself. Unless your script is using depricated code and a bunch of laggy things you dont really dont have a choice.