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

There was a team at my previous job who were also using Automapper but in the end they removed it because of the performance impact.

I think in this specific scenario it's best to write the mapping code yourself, or start replacing them one by one. Maybe one mapping is causing the bad performance?