Issue with iPadOS13 displaying "desktop view", and parallax images on an iPad

Apparently Apple introduced “Desktop Class” view on iPadOS13. That’s nice and all, but it’s completely destroyed all of my sites (that I build with Divi Theme) that use parallax background images (at least on iPads).

If you have an iPad Pro (or even a regular iPad in landscape mode) and you view this website, you will see the background images are all blurry:
https://suigenerispictures.com

Compare it to viewing on a desktop, or even a phone, and you’ll see a big difference. Unfortunately my client says most of the people in his industry use iPads (and often iPad Pros) to view websites, and so naturally he needs me to find a solution, quick!
I’ve attached screenshots of my laptop and and his iPad Pro.

So how can I disable the desktop-class view for people viewing on iPads (if that’s even possible) so they see just the previous tablet version? (I contacted Divi support, and they offered a solution that didn’t work).

This is particularly frustrating, because it ONLY seems to be a problem on Apple iPads with iPadOS13. Any help would be greatly appreciated. Thanks in advance.