1.1: A user wants to know if it is normal for his CPU to run at low usage while rendering.
2.1: Answer:
Hi
The CPU being at 1-2% when rendering is normal as the actual rendering is done by the graphics card.
The CPU utilization is low as it's only used for transferring data and for compressing the images/video frames/MP4 when they're done rendering.
Let us know if you have any other questions.
3.1: References: Forum Topic