By design, our testing is very sensitive. When data errors, packet loss or changes in delay occur - we detect it. However, different Internet applications have different sensitivities to specific types of impairments. Some issues may not be perceptible based on what is being used at the time.
If you think you are seeing excessive alerts, you may want to lower your Usage Sensitivity on the I/O Monitor Settings page. You may also want to verify that only the closest Regional Reporting and Alerting region(s) have been selected.