Question

If I just return a view, is there performance diffrence to return it from Task?

[HttpGet]
public Task<ViewResult> Index()
{
   return Task.FromResult(View());
}

[HttpGet]
public ViewResult Index()
{
   return View();
}

Answer 1

In your case, the Task version is likely to be slower, because you’re just adding overhead of Task with no benefit. Returning a Task makes sense when you can take advantage of async–await, that is, if you’re actually performing some action that can be made asynchronous in your method.