@d Wow, that sounds bad. The interface should definitely not be slow. Some apps load slowly for me on postmarketOS (edge) with Phosh, but once loaded they are very responsive. Mobian seems to have very different problems than pmOS. Or at least enough additional issues to distract from the shared ones.
Merveilles is a community project aimed at the establishment of new ways of speaking, seeing and organizing information — A culture that seeks augmentation through the arts of engineering and design. A warm welcome to any like-minded people who feel these ideals resonate with them.