The screen caputre of macOS 10.14 is very slow.

The screen caputre of macOS 10.14 is very slow. I should wait some seconds to get screen capture image file. So, to resolve this problem, I've searched some blogs and and found:

macOS Mojaveのスクリーンショット撮影のプレビューを無効にする方法

https://www.eisbahn.jp/yoichiro/2018/09/disable_mojave_screenshot_preview.html

This blog says:

1. Type Command + Shift + 5.
   
2. From popuped menu at the bottom of screen, click 'option'.
3. From the displayed menu, remove the check of 'Show floating thumnail'.

You can call this application from LaunchPad.

Macのプリインストールアプリ「スクリーンショット」がめっちゃ便利だった

https://liginc.co.jp/465040

So, according above blog, I put this application to my dock.