The question is different: why can’t I see the load on the video card in the task manager, what percentage is it working? (everything was displayed on the working PC). And in general, if it is not displayed there, are there alternatives?
To begin with, it’s worth saying that the task manager in Windows 10 displays the load on the video card if your OS is not lower than version 1709 and you are using a video driver based on WDDM version 2.0.
Below are several ways to solve the problem (should be relevant for everyone who is faced with a similar issue).