Please try a simple idea - create a smooth video slowdown, a pause (1 s), and then a smooth resume of playback.
I showed how to do this in the screenshot below.
First, make sure you are using the new version - Beta 9.
1. Tick "Speed keypoints" option.
2. Add 4 keypoints, as shown on the screenshot.
3 Click the OK button to save the result.
Check the preview in the Objects and animation editor and the Mini player in the main window.