Someone else was struggling with that export presentage so i dugg in my memory why i choose 90%.
Ooc jpeg size (my g80) and raw to dxojpeg same size is around 98%.
So i think 90-100% is a form of compression factor not in actual los of pixels/resolution and colordepth. Stil 8bits.
95% couldbe a nice comfort. Maybe i follow your lead😉
(i would be out of interest happy if a dxostafmember can explain more about this again.i think i asked before in 2017/18 when i purchaged dxo plv1 .)
Edit: found the old thread