Why is My Entity Framework Async Operation 10x Slower?

Entity Framework Async: A Tenfold Performance Drop

The Issue:

Migrating database interactions to asynchronous methods within Entity Framework 6 unexpectedly results in a dramatic performance decrease. Async operations, in this case, run ten times slower than their synchronous equivalents.

Investigation:

Let's examine a representative code snippet:

<code class="language-csharp">var albums = await this.context.Albums
    .Where(x => x.Artist.ID == artist.ID)
    .ToListAsync();</code>

This asynchronous query retrieves albums associated with a specific artist. Surprisingly, the generated SQL remains identical to its synchronous counterpart:

<code class="language-sql">SELECT 
[Extent1].[ID] AS [ID], 
[Extent1].[URL] AS [URL], 
[Extent1].[ASIN] AS [ASIN], </code>

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