I would not say "default mode sucks", but it is not 1a-experience for me, it's just "OK". My only advice for your requirments - get you an Oneplus 7Pro :)))
Perhaps because Superman Nougat Rom has already modded Camera 100%? And than you've flashed 98% setting? I have King of Nougat V8 Rom. Without Zero's App i had image file sizes about 3,5 to 4,5 MB. And with Zero's App 100% setting) i have now siz...