Instead of hunting for raw files manually, use an automated tool:
Assuming you have acquired the legitimate qUINT_rtgi.fx file (version 01702), follow these steps: rtgi 01702 download free
Open your game’s installation directory (where the main .exe file sits). Locate the folder named reshade-shaders . Move qquint_rtgi.fx into the Shaders subfolder. Instead of hunting for raw files manually, use