The "speed" of an animation depends on the number of frames you have and the FPS.
For most of us, we feel that a clunky animation is a “slow” animation, but it’s not very precise. If you have fewer inbetweens (the frames between the keyframes), or a lower FPS, your animation is likely to look clunky.
To adjust the speed and fluency of the animation, please add in more inbetweens and adjust the FPS. If you feel the animation is too slow, you can use a higher FPS. We recommend not to have FPS under 12. You can slow down part of the animation sequence by repeating the frame.