Param Viewer slow on huge data trees

I wonder why / or perhaps could it be improved that the Param Viewer will slow the canvas significantly, when a data tree with a lot of branches is feed to it.

Feeding {0,0,0,0} (N=10000) is no problem;

But facing the grafted version of the above tree, the viewer sowed everything down, my canvas is almost unmoveable.

I understand that if the mode is Draw Tree, it have to draw the complicated tree (with ten thousand lines, which is meaningless anyway), it is difficult. But even on the text mode, showing the paths, the components react as slowly.

This is particular annoying when number of items are turning huge and the canvas is simply paralysed. I have to delete all Param Viewers. Note that Panel has no such problem, even when asked to display the coordinates of the ten thousand points.