Same thing since the patch.

Since this started, I have updated my nvidia drivers, and performed Windows Update, but no fix. Also tried to downgrade DX in the FFXIV launcher, but that didn't help either.

Ironically, when I click 'Display' in the config menu nothing happens (but the button greys).

I have non-steam, and even deleted the entire game and re-installed from scratch (even to another hard drive). It worked once, and then not since then. I'm not willing to re-install the game every time I want to play it.

Not sure what info is in the 'System Information' but here is some info about my system:
Not OEM (custom built)
AMD Ryzen 7 1800X 3.6GHz
32gb DDR4 RAM
Win 10 Pro 1909
Gigabyte NVidia GeForce RTX 2080 442.50