Comment 3 for bug 36761

Adding the following code to ~/.fonts.conf did it for me:

<fontconfig>
 <match target="font">
  <test name="lang" compare="contains">
   <string>ja</string>
  </test>
  <edit name="embeddedbitmap" mode="assign">
   <bool>false</bool>
  </edit>
  <edit name="autohint" mode="assign">
   <bool>true</bool>
  </edit>
  <edit name="antialias" mode="assign">
   <bool>true</bool>
  </edit>
  <edit name="hintstyle" mode="assign">
   <const>hintnone</const>
  </edit>
 </match>
</fontconfig>