I have used Photoshop for over ten years and my work involves with enlarging artwork inside Photoshop. The dialogue box upon opening a file like pdf, the one where you can resize the file and set ppi, etc., is constantly loading whenever you change any value. If the file size is too big, it freezes your computer until it finishes doing some weird calculation.
I don't need it to start calculating when I haven't even finished typing or changing values. Calculate after I hit ok! I can't believe this is not in Photoshop yet!