Health check does not run every 5 minutes?

Is it correct the health check microflow is not triggered every 5 minutes? On our test environment in the cloud I see that the health check microflow is triggered randomly several times per hour, most of the time with more than 5 minutes in between. We were under the assumption the healthcheck microflow is triggered at least once every 5 minutes because of the forumpost 
1 answers

Check out this: the part about the health check.

It states: This microflow gets called every few minutes to check if the app is still healthy