TableView slow vertical scrolling with 300+ columns

[Martin Desruisseaux]

> Doesn't ControlsFX have that already, or some other 3rd party library?
>
Yes ControlsFX has a GridView class. But it is based on Skin in 
"com.sun.javafx" packages (replaced by "javafx.scene.control.skin" 
packages since JavaFX 9). I have not tested if it would still work with 
JavaFX more recent than version 8.

     Martin