I there any way to change it to less ragged? Switching OEreasmus with another doesnt seem to work.
I don’t recall whether mTropolis supported TrueType fonts. If you do manage to replace it (presumably by renaming another font file), you would need to be pretty careful choosing one with the right metrics.
(If you simply want the best possible text display, and are willing to think totally outside the box, play the game on an iPad 3rd or 4th generation.)