Will smaller field names improve performance?

I have a flat document with 44 fields. One index has 120577177 documents. When our aggregation returns from es the size of the json is around 14-20mb. When doing load testing a query depending on the date range will take 7 - 30 seconds to run(Hitting elasticsearch api directly). Will reducing the field names improve performance, either on the aggregation or shuttle the data from elastic search to my java app?



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What query do you run exactly?

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