Bad performance of the evaluateDecisionTable call

Am evaluating the camunda open source dmn engine for performance. I dont think I have a very complex decision table (6 rules, two inputs, one output). But the execution time of the following line shows an avg of around 60ms. That seems v harsh. Is this reasonable to expect from the dmn engine?

DmnDecisionTableResult result = dmnEngine.evaluateDecisionTable(decision, data);

My bad, i was just seeing the execution time for the first evaluation call. Subsequent evaluations of the decision take ~0 millis