I know I should probably post this in the game related forum, but I think this is something more people should see, and honestly when I looked at the game's sub forum, it seemed to be a lot of people talking in foreign languages. :D
Looks like some people made a mod to completely overhaul several key aspects of Witcher 3.
http://www.pcgamer.com/the-witcher-3-enhanced-edition-mod-completely-overhauls-combat-and-alchemy/

Fedt!

You are right, you SHOULD post this into the game related forums - no matter if you should find randon foreign languages there. Unfortunately we only have language specific "general" forums but no language specific "game" forums so that is totally normal - don't be afraid, they won't bite. :)

Yes, saw this announced on Moddb. Maybe I will try it again, get further than the first outdoors bit before becoming totally bored with it.