Crashes After 7.5, first in specific circumstances now immediately after launch

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Date & Time: Initially, whenever I tried to enter dungeon: The Lunar Subterrane, and once before that - immediately after 7.5 downloaded, when trying to access a Vrtra palace cutscene.
Frequency: Before 7.5, never. After 7.5, every time. After trying the suggested steps from customer support, I now can't even start the game - After pressing play on the launcher, it pops up, but while the screen is still black it crashes and I get the text in Japanese along with the same ffxiv_dx11.exe +1DDE241 thing.
Before I tried the steps to "fix" it, I could access other dungeons. Just not that particular one.
World name: Brynhildr (irrelevant)
Character name: S'naidjaa Neneh (irrelevant)
Class/Level: 90 NIN (irrelevant)
Party or solo: Solo (irrelevant)
In-game time: Any time I tried it
Area and coordinates: didn't matter.
Steps:
1. queue for Lunar Subterrane
2. click 'commence'
3. crash

Connection Specs
Not an issue. Wireless.

■ PC Specs


-=-=-=-=-=-=- FFXIV Information -=-=-=-=-=-=-

FINAL FANTASY XIV - A Realm Reborn Language 1 Region 2
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