You can add a frame rate progress bar in the picture viewer similar to Windows, cpu and gpu directly cooperate even more than one gpu is difficult to achieve the frame rate of 1+1 equals 2, animation computing power separate may be a good choice, small scenes cpu and gpu can interval rendering, large scenes, such as when I play high-resolution fluid rendering animation no time preparation time are more than 30s-60s, 10s In this case cpu pre-render the next frame, wait for gpu to finish rendering the previous frame to take over the work of cpu, cpu continue to prepare the next frame may save a lot of preparation time.