What would you do to improve performance when executing ImpEx?

You have been asked to import a large amount of data using ImpEx scripts

What would you do to improve performance when executing ImpEx? Note: There are 2 correct Answer to this question
A . Enable code execution to dynamically speed up the import
B . Switch on ImpEx legacy mode
C . Enable distributed ImpEx
D . Consider data import sequence regarding dependency

Answer: CD