PSA: ReShade/SweetFX fix for those using GOG Galaxy and having problems recently
GOG Galaxy has started installing a dxgi.dll file, and a d3d11.dll file in TW3's "bin\x64" folder. My guess is these are in preparation for Galaxy's upcoming overlay, but the problem is that it seems to break compatibility for people using ReShade/SweetFX.
To fix it, you can simply delete **both** the aforementioned files, and replace them with ReShade's dxgi.dll (renamed from the ReShade64.dll file). Even with this done, the game may still break if you run the "Verify/Repair" option, or when the game updates again - it can be fixed again by repeating the same procedure of getting rid of the files being added by Galaxy.