is there a possibility to have the upper edges smoothed directly during an extrusion of e.g.: a text (see picture1)? The function Round off edges does not work for all objects (see picture 2). The goal is to have nice rounded edges.
That picture shows that your radius is way too big. You’d probably also want to fillet the vertical edges for the fillet to roll around those corners. Note that curves from fonts are notoriously bad for 3D modeling and you’re likely to run into issues. If this is for display only, you could try edge softening, which only affects the display meshes of the objects.
-wim