Question about gpu /cpu usage

How to know if GPU is working and not the CPU ?

https://prnt.sc/L0Wbfl80zFK-
(1%)
https://prnt.sc/ssx4z7yZY0HU
https://prnt.sc/j3O5tahILi67

+rep work so well... 

what its the way to make a deep with the same imagen and save every change frame by frame?