Make sure your desktop shortcut is for "aceshigh11.exe", not "aceshigh9.exe".
Was messing around with SweetFX tonight, here is what it looks like with the settings I use for AH2. Will be messing around this weekend some more and make a couple of different settings for AH3.SweetFX Off(Image removed from quote.)SweetFX On(Image removed from quote.)
When you select the Aceshigh11.exe in the Reshade set up, it will automatically select to use DirectX 11. If it's not selecting DirectX 11, you can do it manually by clicking on the DirectX 11 button on the Reshade setup interface.