Compare one press with a quick sequence
Use a permitted seekable video and note the position before a single direction press. Then compare a short sequence of quick presses. Record the resulting target shown by Kodi. This distinguishes an accumulating seek action from a chapter jump, fast-forward command or a remote that remains held down.
Kodi’s official guide describes additive skipping for video and music using its default left/right mappings. Configured keymaps can change the action, so establish what the actual remote or keyboard sends before applying the default explanation to every button.
Inspect the step values and grouping interval
Kodi places Skip steps under Player settings for Videos and Music. The enabled values determine the progression available to repeated presses. Its current video-settings page separately describes Skip delay as the interval used to group the quick presses before performing the seek.
The documentation says choosing no delay performs the skip immediately and prevents the multiple-press behaviour. A different delay value changes how long the viewer has to build the intended jump. Preserve the existing values before selecting a configuration that better matches the viewer’s timing.