Did you deploy the vC Ops vApp or Standalone installation? The vApp does not require MQ config nor does it require any self-health configuration at all beyond the basic deployment steps in the deployment guide.
Graph the metrics "badge|density" and "density|ratio|VM to Host "for your vCenter over the past 30 days.. include the X and Y axis so we can see the values. Attach that screenshot here so we can see what we have.
Thanks