i had similar problem and i fixed mine, havent got any crashes like 4days, ill tell you what i did, its probably about graphics card, it makes mesh to crash while zoning and fps dying or something like that im not and expert, i hope this will help you
I have radeon r9 200 series
i went radeon settings,
first i set up profile settings to balanced
second activated radeon gaming for ffxiv
third went to gaming and changed fps to 65 ( it was 55 before)
fourth mozaic mode to best for amd
and uhm sadly i dont remember what i did next or did i so uhm, i don't really understand this stuff but this solved my problem
edit: also i play ffxiv standart on graph settings
I have radeon r9 200 series
i went radeon settings,
first i set up profile settings to balanced
second activated radeon gaming for ffxiv
third went to gaming and changed fps to 65 ( it was 55 before)
fourth mozaic mode to best for amd
and uhm sadly i dont remember what i did next or did i so uhm, i don't really understand this stuff but this solved my problem
edit: also i play ffxiv standart on graph settings