fonts created in makeqpf larger that 171 in size display distorted or inaccurate charactors

    qApp->setStyleSheet("QPushButton { font-family: 'DejaVu Sans' ;font-size : 173px ;}");

    QWidget widget;
    QVBoxLayout layout;
    widget.setLayout(&layout);

    QPushButton button1;
    button1.setMinimumSize(600,300);

    button1.setText("012345678910");
    button1.show();
    QPushButton button2;
    button2.setText("Test");

    QLabel label;
    label.setText("Test");

    layout.addWidget(&label);
    layout.addWidget(&button1);
    layout.addWidget(&button2);
    widget.show();
    widget.resize(1050,850);