No, For slow-motion video we change the clip speed normally to 45 to 50%.
If we have 25 FPS videos, then after 50% of slow down or speed change its frame rate will also change, near around half that is 12 FPS. 12 FPS videos will not play smoothly, you will get jerky play.
For a normal slow motion, you need a minimum of 60 FPS or 50 FPS. For good Slow motion 120 FPS and super slow motion 240 and above FPS.