Apache storm 2.4.0 working slow compared to apache storm 0.9.6

Question

I am migrating to apache storm 2.4.0 from apache storm 0.9.6 But the performance in apache storm 2.4.0 is slower.

I read that wait strategy plays role in performance Exiting application on apache storm 0.9.6 has following wait strategy configuration

topology.spout.wait.strategy: backtype.storm.spout.SleepWaitStrategy
topology.disruptor.wait.strategy: com.lmax.disruptor.BlockingWaitStrategy
topology.disruptor.wait.timeout.millis: 1000
topology.sleep.spout.wait.strategy.time.ms: 1

Tried tweaking wait strategy parameter in apache storm 2.4.0. Following tests i had performed

1. Kept all defaults as it is

topology.bolt.wait.progressive.level1.count:0
topology.bolt.wait.progressive.level2.count:0
topology.bolt.wait.progressive.level3.sleep.millis:0
topology.backpressure.wait.progressive.level1.count:0
topology.backpressure.wait.progressive.level2.count:0
topology.backpressure.wait.progressive.level3.sleep.millis:0

topology.spout.wait.strategy:org.apache.storm.policy.WaitStrategy
topology.backpressure.wait.strategy:org.apache.storm.policy.WaitStrategy
topology.bolt.wait.strategy:org.apache.storm.policy.WaitStrategy
topology.bolt.wait.microsec:0

But performance was lot slower in all scenarios. What other factors we can check for performance testing while migrating? How to improve performance in apache storm 2.4.0?