I am using Ubuntu 20.04 with the default desktop (unity?).

I also use two screens and one of them has a very high resolution.
Dolphin's font is to small on this screen. A solution would be to change the scale of this screen so that all windows are larger on it. Unfortunately, it does not seem to work with nvidia cards right now...

Manually editing dolphin font size each time I want to use it on this screen is obviously not an efficient approach.
I would like to use a command line (or a script) to do that.

Do you know how I could do that?