Robot-Draw Skecth-Time Problem

Hello guys,

I create a workflow to draw skect. Firstly, I need to get x,y cordinates to use bitmap. I already finish such kind of things.
The workflow get the coordinates and alocate in a collection, but it takes too much time is it normal ? I do not understand the reason of it. I was waiting robot more than 36 hours but still working. I used debug and system added x,y values to datatable. But It is not finish. Can someone share their workflow in here to draw sketch