good point about scale reset. In general, try not to mess with scale. Almost always you can get the same thing by changing the font size. The scale feature was added originally in case the buttons were too small or large - mainly for laptops with touch screens.
To make the images more like the original, switch off "image pixel scaling" (which is on by default). This removes the XBR scaling algorithm, but even so the pictures are still scaled to fit the window.
The original pictures are only 256 pixels wide, so they would be _really_ tiny on any modern device. It could just pixel double/tripple/quad etc, but they would be quite blocky indeed.
checkout this blog entry for more info on the pictures, https://strandgames.com/blog/magnetic-scrolls-pictures-enhanced