You should read up on why this think time exists. It has nothing to do with "emulating slow clients" and everything to do with not claiming "I have a fast database" by running gazillion txn/sec on just 1MB of data in RAM.

TPC-C requires that you increase the amount of "live data" if you want to display/advertise more performance. That's the benchmark's rule.

If you want to benchmark something else, that's fine, but then

1) don't call it "TPC-C" 2) don't compare with databases that play by the rules.