Hello @bednar ,
Changing from WriteApi (asynchronous, non-blocking) to WriteApiBlocking worked! I am getting write performance similar to v1.X now. Thanks a lot for the help. 
This means that while InfluxDB java client for v1.X did not mention asynchronous or synchronous writes, it was implicitly synchronous?
Also, is there any updated documentation for writing data into InfluxDB in case I want to further optimize the ingestion rate with v2? Optimal batch size for writing a set of data points?
