Photon players' usernames not syncing properly

So far in my game, I have a login system and a database where I am storing user accounts (I am using Playfab in this case to store player info), and I am using Photon PUN2 in order to create my scene. I have been testing two different players spawning into the room, and I am trying to get their usernames to sync about their heads.

On each player's individual screen, the player's own username shows up perfectly. But, I can not for the life of me understand why the other player's username won't show on others' screens. Here is my basic code setup:

 public class PlayerController : MonoBehaviour
 {
 
     private PhotonView photonView;
 
     public Text display;
     public string username;
 
     private void Start()
     {
         photonView = GetComponent<PhotonView>();
     }
 
     void OnDisplayName(GetAccountInfoResult result)
     {
     if (photonView.IsMine)
         {
             username = result.AccountInfo.Username;
     }
     }
 
     [PunRPC]
     public void getDisplayName()
     {
         GetAccountInfoRequest request = new GetAccountInfoRequest();
         PlayFabClientAPI.GetAccountInfo(request, OnDisplayName, OnErrorDisplay);
         
     }
 
     void OnErrorDisplay(PlayFabError error)
     {
         Debug.Log("Error with display name");
     }
 
     private bool playercount = false;
 
     private void FixedUpdate()
     {
         if (photonView.IsMine)
         {
             if (PhotonNetwork.CurrentRoom.PlayerCount == 2 && playercount == false)
             {
                 playercount = true;
                 photonView.RPC("getDisplayName", RpcTarget.AllBuffered);
             }
 
         display.text = username;
         Debug.Log(username + " is in the game.");
     }
 
     public virtual void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
     {
         if (stream.IsWriting)
         {
             stream.SendNext(username);
         }
         else if (stream.IsReading)
         {
             username = (string)stream.ReceiveNext();
         }
     }
 
 }

Another thing, in the FixedUpdate() function, where I have the debug line...

 Debug.Log(username + " is in the game.");

it IS recognizing that there are two players. But, it still isn't printing out the other username. The debug log will show something like this:

 "Player1 is in the game."
 "  is in the game."

And that's it, meaning it recognizing that two players are present, but still fails to grab the other player's username.

Any help with this is much appreciated. I have spent hours switching code around and to no avail. Idk what I'm missing.