Forces on my rigidbody are really slow

Hello.
In my script, I used maximum force as is possible. If i added more, visual studio told, it cant be used. But it moved so slow, I couldnt almost see it.
My scrpit looks like this:

public class RbMovement : MonoBehaviour
{
Rigidbody rb;
Vector3 forward;
public float speed = 40f;

void Start()
{
    rb = this.GetComponent<Rigidbody>();
}

void Update()
{
    forward = new Vector3(Input.GetAxis("Vertical") * speed * Time.deltaTime * 100000, 0, 0);
}

void FixedUpdateUpdate()
{
    rb.MovePosition(this.transform.position + forward);
}

}

(this isnt the maximum I was talking about)

Does anyone know, what is wrong here?

well you have are multiplying speed with Time.delta.Time so if you want to increase change the code to something like

void Start() { rb = this.GetComponent<Rigidbody>(); } void Update() { forward = new Vector3(Input.GetAxis("Vertical") * speed * 100000, 0, 0); } void FixedUpdateUpdate() { rb.MovePosition(this.transform.position + forward); }

that will move charcter way to fast but that can be adjusted by lowering down speed variable.

forward = transform.forward * Input.GetAxis(“Vertical”) * speed * Time.deltaTime;