How to find and edit the source of a string in a DX11 game's exe/files (debug build of the game available)

I want to find and edit the values for the motion blur effect in Naruto: Ultimate Ninja Storm 3 on PC (Windows, DX11) to be more in line with the PS3 version (and the other Storm games on PC as well). The PS3 version uses a very nice per-object motion blur while the PC version uses a crappy camera blur. The ultimate goal of this is to transfer this motion blur over to Storm 4 on PC which uses the same engine.

All of my findings are documented here:
https://docs.google.com/document/d/1xxqOxLJwt04sgnIKqHHlfr8Gu6V_4toOFHv52P1FYEY/edit?usp=sharing