FFXIV Shut down after successful log in

[MerriMane]

I wanted to make another post about this just to signal boost, but I'm having the same issue as a previous thread in this forum:
https://forum.square-enix.com/ffxiv/...29#post6788429

I can successfully log in to the game, but when i press the play button, the game opens then shuts down to desktop without any errors, no "not responding", no error codes or error logs, just a very clean shut down.

Tried (all failed):
- Full uninstall + manual delete game/My Docs/AppData/SquareEnix folders + fresh reinstall (3x).
- boot64.exe as admin + Windows 8 compat + disable fullscreen opt + DPI override System.
- Single monitor (DP 1080p).
- Defender/Firewall off + exclusions.
- Clean boot (msconfig disable non-MS).
- DDU NVIDIA clean + driver reinstall.
- SFC /scannow (repaired files) + DISM RestoreHealth (success).
- Configs wipe + folder rename.
- Display settings and resolution tests in control panel + windows settings.
- Reinstalled FFXIV patches.
- Tried with VPN.
- Disabled and shut down everything else in task mgr.

Specs:
- Windows [winver result, e.g., 10.0.19045].
- i7-8700 @3.7GHz, NVIDIA [GPU model/driver ver from Device Mgr].
- Dual 1080p (DP+HDMI).

I'm completely at a loss with this, and I'm starting to suspect it's not a user side issue but on Square Enix's side