title: How to optimize save multiple records in Entity Framework WITHOUT extension?
body: <p>I am looking for a way to save thousands of records (10K+) without using an extension. Any ideas on how exactly to bulk update this amount of data with a reasonable execution time?</p>
  
  <p>My current issue is that when calling dbContext.SaveChanges() it is saving all records in memory and not only the modified ones resulting in updating 20K+ records when only about 10K records have been modified.</p>