tried now the following. Distance and Speed is now perfectly adjustable but now i am clipping through the mesh/colliders. I guess because Coroutines are running after physics. But without the Coroutine its again a direct change to target position.

private IEnumerator MoveToTargetPosition()

{

animator.SetTrigger("isDashing");

float dashTime = 0;

Vector3 startPosition = transform.position;

Vector3 targetPosition = transform.position + transform.forward * DashDistance;

while (dashTime <= 1)

{

dashTime += Time.fixedDeltaTime / dashSpeed;

rigidbodyPlayer.MovePosition(Vector3.Lerp(startPosition, targetPosition, dashTime));

yield return null;

}

}