dunno what exactly your prog does, but filtering helps most of .7600. are not needed, same goes for build numbers below 21xxx you can also nuke non en-us fonts backups and code-pages (or whatever its called) then everything not named after your SKU manualy, I managed SP1 + 2015 updates, winsxs to trim down on 764 MB with more detailed crap -10 MB could go down maybe, but thats as far as it goes (32 bit)