Face Refinement Analyze - Normal system usage?

While using FRA, I noted the lack of CPU and GPU utilization. As in less the 20% on each.
Is this normal usage, or should it be higher?
Is this normal usage, or should it be higher?
https://forum.blackmagicdesign.com/
https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=141600