The way the game works is based off of your fps. Animations will play like normal if you are running at 60 fps. So you should try to get your fps as close to that number as possible.
If you are on an older system this could potentially be difficult, but try lowering your graphics settings.
If your system is relatively modern and you are sure you should be getting 60 fps, make sure your "Frame Skip" is set to 0 in the launcher settings and make sure your monitor's refresh rate is set to at least 60.