Split screen without changing dpi

Hi there,
I use carsifi in a 2017 skoda superb, it works well except for one thing : the split screen.
I used a trick to get the split : change dpi to 100 in carsifi app.
It works fine, the right quarter of the screen display a second app.
BUT the maps are so so small, impossible to read or select something while driving.
In full screen, maps are OK.
It would be nice to get an option in carsifi app without tweaking dpi to keep maps ok.