DS 4.2 - Loading high volume data into SFDC

Hello Everyone ,

DS 4.0 loads data into SFDC with batch size 200. Do we still have this limitation in DS 4.2 ?

With DS 4.0 , we are loading 40k records into SFDC in around 400 seconds. However , I have a new requirement to load 1 million + records into SFDC on daily basis using DS 4.2.

Does it make sense to use DS 4.2 to load high volume data into SFDC or should we use SFDC loader ?