So what is the solution? 8 Apps Closing Behaviour Customizer is a tiny and portable application which helps you to decrease this distance and even decrease the time interval from 2 seconds. This application has a very clean and Modern UI.
How To Use:
Just download the app from link given below and run it. Once run successfully, move the slider for “Closing Time” to the desired value to set the timing to close the app once dragged to the bottom. Move the slider for “Height to drag” to customize till how much height (in percent), you have to drag the app to take it to the bottom. Once all values are set, click Apply. It will restart your explorer and you will get a success message.