Constant freeze on certain graphics/mechanics on Mac

[Aisa_]

Frequency: Always
Monster Name:
Always locks up:
- Aglaia, Rhalgr's Emissary, Ability: Lightning Bolt
- Alzadaal's Legacy, Ambujam, Ability: Toxic Fountain
- Anima, Tower of Babil, Ability: Boundless Pain
Sometimes locks up:
- PvP: Sometimes in Frontline.
- Another Sil'dihn Subterrane, Silkie, Ability: Bracing Suds
- About a 1-2 out of 10 attempts this locks up.

Since patch 6.2, my system always locks up on the first two bosses listed, and sometimes on the new Criterion dungeon's first boss, Silkie. As soon as the abilities start, the screen completely freezes and locks up. If I ALT+TAB, I can recover sometimes, but 1 out 4 times, it will complete freeze the screen and I have to force quit FFXIV.

Previously, I was using Catalina (10.15) when it started on patch 6.2, then upgraded to Monterey (12) but the problem persisted.

It seems like the freeze takes place on movement and/or ability start. And it feels like it's spherical effects that is causing the freeze, ie Lighting Bolt forms two orbs, as soon as they appear, my screen freezes. I have been able to cancel the freeze if I zoom in and point my camera down at the ground, sometimes. Otherwise, it will always freeze my screen.

Settings:
Full Screen (Also tried Windowed and Borderless)
1920x1080
All graphic settings set to low.
Shadows off.
Texture filtering: Bilinear, x4 (Also happens in Trilinear, x4)
Movement Physics: Self (Simple), All others (Off)
AO, Glare, Water: Off

Setup:
iMac, 8-Core Intel Core i9 3.6 GHz, 16 GB memory
Radeon Pro Vega 48