The current range causes lots of collisions and the application doesn't handle them gracefully, causing lots of exceptions to get logged and hamerring performance. Use 100,000 like the JMeter test, see https://github.com/slandelle/tutorials/blob/master/testing-modules/load-testing-comparison/src/main/resources/scripts/JMeter/Test%20Plan.jmx#L203
Testing Modules
This is an aggregator module containing multiple modules focused on testing libraries.