Kevin L. answered 09/24/20
11 years experience with AutoCAD/Civil3D
It's usually the annotation scale or the linetype scale:
-You can change the annotation scale by clicking on the drop-down on the bottom right corner of the screen and selecting a larger scale.
-To change the line-type scale, use LTSCALE command and input a higher value. Or change it for the individual object in the properties (hotkey for properties menu is Ctrl+1).
And then regen command (REA or RE)