Picture in Picture shouldn't have "quality" presets, since the quality remains same no matter what PiP quality is chosen.
Only distance at which you can see objetcs drawn, using PiP, changes when changing PiP "quality".
But when choosing different PiP "quality" settings, there is no way to know the exact max distance at which objects will be displayed when using PiP.

PiP should instead be located under overall/objects/shadows sliders, it also having its own distance slider.

But ofcourse, when choosing a specific video options preset, PiP distance slider will/should default to a certain distance, like now.