Is there a way to get a higher quality version of the household group photo?

I would like to get an image of all the members of my Sims household together, but the auto-generated image on the gallery is too low quality to post anywhere. The individual images for each household member look good, but for some reason the group photo is really blurry. 

I tried copy/pasting the image but highlighting or right clicking didn't work. Taking a screenshot worked to get an image, but it obviously still had the issues of being low quality. Is there a way to export a specific photo from my gallery in HD? (I haven't posted the household to the public gallery yet because I would like feedback on my Sims before posting it.) Or is there some other way to get a high-quality image of all the Sims in a household? 

I tried Googling solutions to this, but the only one I found was a post from 10 years ago that said that Sims 4 Studio would help. I downloaded that program and followed the instructions, but the images aren't any higher quality, like the post suggested they would be. And it was hard to sort through the images there. 

All the other results I found from my Google search were simply dozens of photography mods to take photos and put them into frames in-game, which isn't what I was looking for. 

Ideally, I would like to be able to get an image from something like CAS or the gallery and not have to set up the photo in Live Mode. 

Any help would be appreciated!