If you check the code for the product images, they are wrapped in a slider-component (if you check that option in the theme customiser). That means the product images are already ready to be in a slideshow, but on mobile only.
So you basically just need to change the CSS in order to make the desktop view the same as on mobile devices. That means if some rules are specific to mobile (screen < 750px), you can apply the same for screens > 749px. And if there is anything specific for screens > 749px you can remove. You might need to adjust a few things, but that worked for me!