MisakaCirno You can modify the Timeline FPS to your desired FPS in the Playback view, but this will change the speed of your animations in the Spine editor and at runtime will be faster or slower, so box select all the keys on your animation, then scale the keys to match your desired speed of animation.
If the number of animations is small, the above method would be fine, but if there are many, it would be very tedious, so the method using JSON import as described in the user guide would be easier:
Playback view - Changing the timeline FPS
