Pre-generated Mapping Views

Question

I followed this simple instruction to create the Mapping Views:

Always the first consultation at the bank takes so creation Mapping Right? That’s why the first delay? Right? I created it in the form of the forum, but even so it takes the first consultation, should stop, not?

I even tried to "cheat" by putting an Async search at the beginning of the system:

using ( var ctx = new Contexto)
{
 var lista = ctx.Usuario.ToListAsync();
} 

But this query stays there until finished, and locks the layout.