Is there a way to select ReduceInterlaceFlicker (RightClick/Properties) for a bunch of stills at the same time? When more than 1 event is selected, the Properities choice is greyed out.
If the stills are sequential, right click on the first one, click on Select Events to End, then right click again, go to Switches and check Reduce Interlace Flicker. It will change the option for all the following stills.
If the stills you want to change are not in sequentail order, Group the stills you want and then use the Switches option.