Tier 6 Graphics Custom Anti-Aliasing Profile (Nvidia Inspector)

[TaigaUC]

From Lavendy's site (in Japanese):
https://lavendy.net/pso2es/custom-profile-s6/

That page said they were in the middle of testing it, back in March.
I don't know if there's an updated version.

Fullscreen
Windowed/Virtual Fullscreen/Borderless Window

Did some testing. It allows for anti-aliasing without losing the tier 6 shadows.
I noticed that hair textures may appear a little glitchy (strange streaks).
If so, simply set the Ambient Occlusion Compatibility to 0x0000000.

So, why use this? Because the default anti-aliasing is jaggy as hell.
This should allow you to get better anti-aliasing. You can also use SGSSAA and all that crap.

For those unfamiliar with using Nvidia Inspector, here's the original thread with more info.

Edit: Turn off Blur in the game setting options, or else you'll get some weird visual glitches. Once you turn Blur on, you'll need to restart client to fix the glitches.
You may also need to update to the latest Nvidia drivers.

Sample image (4xMSAA):

Spoiler!