1. <qpp.jdbc.maxActive>
    Refers to the maximum number of possible concurrent connections from Dispatch Server to the database (SQL server, in your case). By default its value is 200 but with blank value, user may face problems.
  2. <repository.status.updator.sleepInterval> *
    QPS should not work noticeably slower if you change the value from 30 to 10, but Quark do not recommend this. We would suggest you increase this value from 30, but should not set this value below 30.