Drag selection box has a delay in orthographic view

Hi there,

In the orthographic views there is a short delay from when you start RMB+drag until the selection box appears, making it more difficult than necessary to select the things you want to select.

This only happens when the framerate is low (i.e. complex scene). It seems like when you start dragging out a selection box, the box will start where the mouse cursor is on the next frame update rather than where it was when you started dragging.