1. Establish a baseline
Restart, use stock clocks, note game and driver versions, and reproduce the issue in the same scene.
Fix crashes in Final Fantasy XIV
Repeatable diagnosis before random config edits.
2. Work the likely causes
Remove overclocks, verify files, update or clean-install a stable driver, disable conflicting overlays and inspect temperatures and memory use.
3. Change one variable
Retest after each change. Preserve screenshots of settings and revert changes that do not help.
4. Escalate with evidence
Use official support with crash logs, exact hardware, temperatures, patch version and reproduction steps.