How to crouch, but not fall on different fps?

The first GIF was recorded in 60 frames, on it the crouching goes smoothly and correctly. The second GIF is recorded in 20 frames and on it the character no longer crouches, he shrinks to the center and eventually falls, how to fix this? Maybe there is a way to move the (anchor point, pivot point) of the capsule component from the center to the bottom?
Hi.

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Golden rule with timelines is: ( fanfare ) always calculate the start and end points for the lerp BEFORE going into the timeline.

Notice how you’re sampling the current character height from the character movement component?

That’s the problem.