Adding Children to child of QScrollArea is a time consuming task

A widget( A) is set to QScrollArea, then children are added to widget(A).

Time taken to add child to the widget(A) with QScrollArea is more than time taken to add children to widget(A) without QScrollArea

Time taken is increasing with every new addition of child. This time difference becomes huge in case widget(A) has large no of children

If children are added to widget(A) and then we add QScrollArea. Time taken to set widget(A) as child of QScrollArea is taking approx 4.5 seconds.

Note: this issue comes into notice if count for children is large.