我從 REST 服務上傳大量圖像，并通過定期任務使用它們創建各種 gif 圖像。我想知道如何優化我的代碼，改進它并使其更快。 public class WebcamListViewModel : BaseViewModel{    public ICommand InitializeWebcamsCommand { set; get; }    public ICommand OpenVideoWebcamCommand { set; get; }private List<Webcam> _ListOfWebcam { get; set; }public List<Webcam> ListOfWebcam{    get { return _ListOfWebcam; }    set    {        _ListOfWebcam = value;        OnPropertyChanged();    }}private IFolder folder;private int _Counter { get; set; }public int Counter{    get { return _Counter; }    set    {        _Counter = value;        OnPropertyChanged();    }}private Task SetFrameOnViewTask;private Task DownloadFramesTask;CancellationTokenSource tokenSourceSetFrame = new CancellationTokenSource();CancellationTokenSource tokenSourceDownloadFrames = new CancellationTokenSource();CancellationToken cancellationTokenSetFrame;CancellationToken cancellationTokenDownloadFrames;public WebcamListViewModel(INavigationService navigationService, IApiAutostradeManagerFactory apiAutostradeManagerFactory) : base(navigationService,apiAutostradeManagerFactory){    OpenVideoWebcamCommand = new Command<Webcam>(async (webcam) => {        await navigationService.NavigateAsync(Locator.WebcamVideoPopUpPage);        Messenger.Default.Send(new InfoWebcamVideoMessage(webcam.c_mpr, webcam.c_uuid, webcam.t_str_vid));    });    InitializeWebcamsCommand = new Command(async () => await RunSafe(InitializeWebcams()));    InitializeWebcamsCommand.Execute(null);    cancellationTokenDownloadFrames = tokenSourceDownloadFrames.Token;    DownloadFramesTask = new Task(async () => {        cancellationTokenDownloadFrames.ThrowIfCancellationRequested();在我的 viewModel 中，我有兩個任務：DownloadFramesTask 和 SetFrameOnViewTask，每 500 毫秒增加一個計數器，用于顯示輪流中的四個幀之一。