0CSM_USER_TEXT taking much time to load

Its related to 0CSM_USER_TEXT which isn’t a Retail Datasource/Object so I’m to assume it’s a FI&Gen Job. The job currently produces 200,000 records over an 8 hour period. Firstly it used to finish in 8 sec for some number of records those were Not more than 10,000.

Please tell me solution why the loading is taking so much of time. Because of this whole Process Chain is taking time to load.