By specifying these additional frames as setup frames, they are copied boilerplate (expect for the frame-end buffer swap) to the output setup frame and so are the calls of dependencies of objects used in these additional frames. ... Calls per frame: Frame[3334] = 56743 Frame[3806] = 42453 Frame[3813] = 33820 Frame[3795] = 26747 Frame[3814] = 24379 Frame[0] = 6145 Frame[2032] = 5848 Frame[3817] = 5392 Frame[3934] = 5313 Frame[3937] = 5282 Figure 4: Civilization V: rendering of original trace (upper left) and after trimming to one frame without setup frames (upper right), with 15 setup frames starting at a large frame (middle left), 25 setup frames (middle right).