Use time remapping for slow motion

I need this shot to breathe and hit a beat. Apply time remapping to the clip on the timeline so the actor eases into a slow-motion section starting at 01:12:04, reaching 40% speed over one second, holding for two seconds, then ramping back to 100% by 01:12:08. Smooth the speed ramps so the audio doesn’t jitter, and check adjacent cuts so no frames snap.

Before I hand the cut to color, make the slow-motion moment feel intentional and reviewable. Put the slow section’s keyframe markers in the clip, label the segment Slow-Mo-Beat, show the in/out frame counts, and add a note where motion blur should be added during grading. Flag any jump cuts and suggest whether to extend frames or add a cross-dissolve.

I ramped a speed keyframe to 40% and the motion snapped—there’s a stutter at the join. The editor on the bench is watching; I’m worried the director will call it sloppy. I can’t tell if it’s wrong keyframe placement, missing frame blending, or timeline rendering. What is most likely causing the jerk and what are the exact fixes to try now?

Across projects I spend hours fixing slow-motion ramps that still look jittery on playback. I lose time toggling frame blending, re-timing handles, and explaining to directors why the shot can’t be slowed more. What habit should I change and what checklist or preset would stop me redoing the same steps on every slow ramp?