Solution
You can change update rate by running the following command in command prompt.
Run from minion (client):
C:\Program Files\National Instruments\Shared\salt\salt-call nisysmgmt.set_health_monitoring_interval ###Run from master (server):
C:\Program Files\National Instruments\Shared\salt\salt <MINION_ID> nisysmgmt.set_health_monitoring_interval <INTERVAL_TIME>If you want to see the current setting of update rate, replace set to get of each commands. See the following image for reference.