You need the Boulotaur2024 version of the injector that has better compatibility, 64-bit support, etc. It's
here.
Unzip that into the FFXIV ARR\game directory and then overwrite SweetFX_settings.txt with
mine. I did everything I could to minimize the distortion that SMAA causes to fonts that already have subpixel rendering (e.g. ClearType) applied.
Screenshots:
Normal
SweetFX
Text distortion minimized(That's a P3 screenshot, and I found the problem less noticeable in P4. Didn't take any new screenshots though.)
On a related topic, there are new Catalyst beta drivers (13.8b2) that have optimizations for FF XIV. Hopefully they also fixed the crashing caused by the previous beta Cats. If they don't, you'll need to downgrade to 13.4.