setspaceenhanced
Standalone successor of the scrhack module for setspace — supports font sizes outside the 10/11/12 pt set.
The package setspaceenhanced was originally created years ago as a hack
module of the then KOMA-Script package scrhack, to
solve an issue when using setspace with
body font sizes outside the 10 pt, 11 pt and 12 pt set supported by the
standard classes.
In addition, setspaceenhanced responds better to font-size changes within
the document. This enhancement can be disabled optionally.
The package is part of the “Third Party Enhancements” hosted on GitHub. See the CTAN catalogue entry for more.