Arm swinging locomotion for VR in Unity

SwingingArmMotion.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class SwingingArmMotion : MonoBehaviour
{
    // Game Objects
    [SerializeField] private GameObject LeftHand;
    [SerializeField] private GameObject RightHand;
    [SerializeField] private GameObject MainCamera;
    [SerializeField] private GameObject ForwardDirection;

    //Vector3 Positions
    [SerializeField] private Vector3 PositionPreviousFrameLeftHand;
    [SerializeField] private Vector3 PositionPreviousFrameRightHand;
    [SerializeField] private Vector3 PlayerPositionPreviousFrame;
    [SerializeField] private Vector3 PlayerPositionCurrentFrame;
    [SerializeField] private Vector3 PositionCurrentFrameLeftHand;
    [SerializeField] private Vector3 PositionCurrentFrameRightHand;

    //Speed
    [SerializeField] private float Speed = 70;
    [SerializeField] private float HandSpeed;

    void Start()
    {
        PlayerPositionPreviousFrame = transform.position; //set current positions
        PositionPreviousFrameLeftHand = LeftHand.transform.position; //set previous positions
        PositionPreviousFrameRightHand = RightHand.transform.position;
    }

    // Update is called once per frame
    void Update()
    {
        // get forward direction from the center eye camera and set it to the forward direction object
        float yRotation = MainCamera.transform.eulerAngles.y;
        ForwardDirection.transform.eulerAngles = new Vector3(0, yRotation, 0);

        // get positons of hands
        PositionCurrentFrameLeftHand = LeftHand.transform.position;
        PositionCurrentFrameRightHand = RightHand.transform.position;

        // position of player
        PlayerPositionCurrentFrame = transform.position;

        // get distance the hands and player has moved from last frame
        var playerDistanceMoved = Vector3.Distance(PlayerPositionCurrentFrame, PlayerPositionPreviousFrame);
        var leftHandDistanceMoved = Vector3.Distance(PositionPreviousFrameLeftHand, PositionCurrentFrameLeftHand);
        var rightHandDistanceMoved = Vector3.Distance(PositionPreviousFrameRightHand, PositionCurrentFrameRightHand);

        // aggregate to get hand speed
        HandSpeed = ((leftHandDistanceMoved - playerDistanceMoved) + (rightHandDistanceMoved - playerDistanceMoved));

        if(Time.timeSinceLevelLoad > 1f)
        {
            transform.position += ForwardDirection.transform.forward * HandSpeed * Speed * Time.deltaTime;
        }

        // set previous position of hands for next frame
        PositionPreviousFrameLeftHand = PositionCurrentFrameLeftHand;
        PositionPreviousFrameRightHand = PositionCurrentFrameRightHand;
        // set player position previous frame
        PlayerPositionPreviousFrame = PlayerPositionCurrentFrame;
    }
}