I found this post about how to get the FXAA injector working with Syndicate. Try the same with SweetFX. This is a good general tip for anyone having problems with a particular game. Google it's name and either SweetFX , FXAA inject (or injector or injected), InjectSMAA or ENB. ENBseries, InjectFXAA , FXAAtool, InjectSMAA and SweetFX all use the same method (a proxy direct3d dll) to apply effects, and so they all install pretty much the same. So solutions for problems with one injector, usually works with the others as well.