Why use JeanLucPons/Kangaroo's program

On my 4060ti machine, the graphics card cannot run to full capacity, displaying 650MKey/s. The graphics card is constantly at a temperature of around 50 degrees Celsius, and the graphics card fan only rotates at 1200 rpm. It is obvious that the graphics card is not running to full capacity.

Does the program need optimization? Where is the reason?