Hi,

i am using graphics , qcombobox, qpushbutton, qtreewidget, qtablewidget, grid view, etc... in my application. when i load my application in debug mode , the application is very slow & freeze some time.
In normal mode, static widget like(qcombobox, qpushbutton) working very slow. when i press combo box, it takes 2min. some time freeze.

what is the main reason? what are things i have review my code. please anyone can help this issue.