Fully customized SweetFX solution for AC. Regardless of SFX, AC with PP OFF just looks plain and outdated. Which means, you have to re-enable it if you had SFX w/PP ON installed. In this new version of AC, they disabled PP by default. New AC version is fully compatible with the bundle, but there's a note thought I'd add. Splash logo is now disabled (you can re-enable it from efx.ini).

Update: I re-up'd 1.0 with slightly cleaner code + 2 preview shots.

I highly recommend trying this with my Inspector profile and in-game settings (check thread from link below). It does NOT add contrast modifications, SMAA anti-aliasing, vignette or any other effects aside for sharpening. It ONLY adds a custom configured sharpening layer, making all textures pop with details. This bundle was constructed specifically for AC using eFX v2 1.9.30 and SweetFX 1.5.1. I made a meticulous effort to understand how to build bundles for different games, without including unnecessary files or randomly collected presets with effects you don't need. SweetFX is a post-processing plugin that hooks on top of games to add different effects.

How to sweetfx