If you are reading this thank you for downloading my mod!

////V1////

If you downloaded the original sorry about the 700mb file size, but if you did go to:

SteamLibrary/steamapps/common/Dying Light 2/ph/source

and simply replace data0.pak with the one you just downloaded.

////V2////

Again go to 

SteamLibrary/steamapps/common/Dying Light 2/ph/source 

and open data0.pak with WinRar or 7Zip. Drag the physics file you just downloaded straight into there and "replace files in destination"

Hope this helps!