Honestly your auto-commit configuration seems not alarming at all! Can you give me more details regarding :
Load expected : currently it is 7- 15 should be below 1 What does this mean ? Without a unit of measure i find hard to understand plain numbers :) was expecting the number of documents per unit of time you index, and an average size of these docs. Which kind of DIH processor ? Where is your data coming from ? A database ? Let's try to improve the understanding of the situation and then evaluate an approach. Cheers