RobotStudio's solution to the slow dragging speed of Ctrl+left mouse button

In the process of using ABB RobotStudio, I sometimes encounter the problem that the speed of the mouse to drag the pan angle of view suddenly slows down. I don't know where the problem is, but I found a solution:
right click on the blank space of the workstation, click view all or view center

and then It's back to normal.