press windows key+enter to open a terminal. then run the command touch ~/.Xresources to create a file Xresources then edit it with vim or nano (or any other command line based editor)

run the command windows key+p and enter the name of your browser of choice though you may be unable to see what you are typing

after opening a browser enter the url dpi.lv and copy its pixels per inch result. its 166 for me

in your file ~/.Xresources type Xft.dpi: 166 but replace 166 with your pixels per inch you just got

after saving ~/.Xresources press windows key + control + r to reload awesome and your problem should be fixed!