Unity Photon2 プレイヤーがルームに参加すると床をすり抜けて落下してしまいます。

UnityのPhoton2でゲームを再生するとプレイヤー1がルームを作り、プレイヤー2以降がそのルームに参加するプログラムをこの動画を参考に作ったのですが、どちらも相手プレイヤーが表示はされるのですが、スポーンしたらすぐ床をそれぞれの画面の相手プレイヤーが床をすり抜けて落下してしまいます。
なにが、原因でしょうか?

PlayerMove

C#
1using System.Collections;
2using System.Collections.Generic;
3using UnityEngine;
4using Photon.Pun;
5
6public class PlayerMove : MonoBehaviourPunCallbacks
7{
8    private CharacterController controller;
9    private Animator animator;
10    private Vector3 velocity;
11    [SerializeField]
12    private float walkSpeed = 5f;
13    [SerializeField]
14    private float runSpeed = 8f;
15    private bool runFlag = false;
16    public float mouseSensitivity = 100f;
17    public Transform playerBody;
18    float xRotation = 0f;
19    [SerializeField]
20    private Transform spine;
21    public GameObject cameraParent;
22
23    void Start()
24    {
25        controller = GetComponent<CharacterController>();
26        animator = GetComponent<Animator>();
27        Cursor.lockState = CursorLockMode.Locked;
28        if (photonView.IsMine)
29        {
30            cameraParent.SetActive(true);
31            controller.enabled = true;
32        }
33    }
34
35    void Update()
36    {
37        if (!photonView.IsMine) return;
38            if (controller.isGrounded)
39            {
40                velocity = Vector3.zero;
41                velocity = (transform.forward * Input.GetAxis("Vertical") + transform.right * Input.GetAxis("Horizontal")).normalized;
42                float speed = 0f;
43                if ((Input.GetButton("Run")&& Input.GetButton("Fire2") == false))
44                {
45                    runFlag = true;
46                    speed = runSpeed;
47                }
48                else
49                {
50                    runFlag = false;
51                    speed = walkSpeed;
52                }
53                velocity *= speed;
54
55                if (velocity.magnitude > 0f)
56                {
57                    if (runFlag)
58                    {
59                        animator.SetFloat("Speed", 2.1f);
60                    }
61                    else
62                    {
63                        animator.SetFloat("Speed", 1f);
64                    }
65                }
66                else
67                {
68                    animator.SetFloat("Speed", 0f);
69                }
70            }
71            velocity.y += Physics.gravity.y * Time.deltaTime;
72            controller.Move(velocity * Time.deltaTime);
73        if (Input.GetKey(KeyCode.Escape))
74        {
75            Application.Quit();
76        }
77    }
78    void LateUpdate()
79    {
80        if (!photonView.IsMine) return;
81            float mouseX = Input.GetAxis("Mouse X") * mouseSensitivity * Time.deltaTime;
82            float mouseY = Input.GetAxis("Mouse Y") * mouseSensitivity * Time.deltaTime;
83            xRotation -= mouseY;
84            xRotation = Mathf.Clamp(xRotation, -90, 90);
85            playerBody.Rotate(Vector3.up * mouseX);
86            spine.rotation = Quaternion.Euler(spine.eulerAngles.x + xRotation, spine.eulerAngles.y, spine.eulerAngles.z);
87    }
88}
89

Launcher　　(MenuScene)

C#
1using System.Collections;
2using System.Collections.Generic;
3using UnityEngine;
4using Photon.Pun;
5
6namespace TEST
7{
8    public class Launcher : MonoBehaviourPunCallbacks
9    {
10        public void Awake()
11        {
12            PhotonNetwork.AutomaticallySyncScene = true;
13            Connect();
14        }
15        public override void OnConnectedToMaster()
16        {
17            Debug.Log("CONNECTED");
18            Join();
19            base.OnConnectedToMaster();
20        }
21        public override void OnJoinedRoom()
22        {
23            StartGame();
24            base.OnJoinedRoom();
25        }
26        public override void OnJoinRandomFailed(short returnCode, string message)
27        {
28            Create();
29            base.OnJoinRandomFailed(returnCode, message);
30        }
31        public void Connect()
32        {
33            Debug.Log("Trying to Connect");
34            PhotonNetwork.GameVersion = "0.0.0";
35            PhotonNetwork.ConnectUsingSettings();
36        }
37        public void Join()
38        {
39            PhotonNetwork.JoinRandomRoom();
40        }
41        public void Create()
42        {
43            PhotonNetwork.CreateRoom("");
44        }
45        public void StartGame()
46        {
47            if(PhotonNetwork.CurrentRoom.PlayerCount == 1)
48            {
49                PhotonNetwork.LoadLevel(1);
50            }
51        }
52    }
53}

Manager　　(MapScene)

C#
1using System.Collections;
2using System.Collections.Generic;
3using UnityEngine;
4using Photon.Pun;
5
6namespace TEST
7{
8    public class Manager : MonoBehaviour
9    {
10        public Transform spawn_point;
11        private void Start()
12        {
13            Spawn();
14        }
15        public void Spawn()
16        {
17           GameObject Player =  PhotonNetwork.Instantiate("Pose",spawn_point.position,spawn_point.rotation);
18        }
19    }
20}