Active Administrator takes the value from performance counter. You need to adjust, based on the logical number of processors.
The Microsoft article outlines exactly what is going on here:
https://social.technet.microsoft.com/wiki/contents/articles/12984.understanding-processor-processor-time-and-process-processor-time.aspx
This Processor time counter under the Process Object gives the amount of CPU this Process is taking individually. This value is calculated over the base line of (No of Logical CPUS * 100), This is going to be a calculated over a baseline of more than 100.
Adjust the threshold for the alerts to be the current value * the number of logical processors on the target DC.