Automapper running extremely slow on mapping 1400 records

Question

I am using AUtomapper which I am very impressed with however, I have a complex object with many nested collections. I\'m using Telerik OpenAccess and it returns the 1400 records

Answer 1

For those coming to this later, AutoMapper 5.x release made significant performance improvements, where mapping speed is only slightly slower than hand mapping (1M items):

• Native: 0.19s
• AutoMapper: 0.49s
• AutoMapper 4.2.1: 29s