It really is hit or miss 😕
We found on all of our tests that images are becoming clearer (like Crack DAT and, of course, our material 😉 ). Nonetheless, they can throw maybe some ridiculously low-resolution image from the 1980s amongst the pristine others. In those cases, though, the resolution, more often than not, is not extremely important (the problem tends to be easier).
Don't fret too much! 😳