Yes, if the devs could unlock some of their development tools it sure would be interesting to see what uses what.
Idle factory has nothing moving on conveyor belts , so CPU is not sending as much complex data to be drawn on by the video card, in effect the video card is getting a rest.
On an i7, 8 core , 16 threads hyperthreading CPU, [ with access to 16g RAM @ 3000mhtz] the bottleneck is the video card when things start moving.
The video card is struggling to draw on all the data / polygons the CPU is sending it in time.
Video card GTX 980.
A 2015 card.
Some tools to monitor all of this would be really awesome devs, and maybe you learn something you didnt expect.