Pan & Zoom has become zoomier

I used to pull my photos into a slide show and they would automatically be set to zoom in to about 120%. Since one of the recent updates, the zoom is now set to 149% which means I have to manually reset each photo back to 120%. I can’t for the life of me figure out a place to set it back to how it was. Is there a way to do this?

Thanks in advance.

Update: Nevermind, it’s not doing that anymore… (??)