The problem is that your trying to create a new entity several times per second. When really, you just need one entity per player, and have it follow that player. Easiest and most effective way - when the player spawns.
Also, this is why you never "post an example" of what your trying to do. Always provide any and every relevant detail to your issue to ensure that the users helping you understand what your trying to do and can help provide a solution. And in order to prevent what we have right here, known as the XY Problem.