More d/cs tonight. One accompanied by what looked like a server hiccup (but no corresponding latency spike) and one just for no particular reason at all (no latency, no server delays). Both of these were 90002s. Fortunately they happened before and after I main tanked an alliance roulette... that's a fun way to cause random problems.

And when I've set up 2 FF14s running on my PC, one using the keyboard, the other using a controller, either my account or my friends account would be DCed, but not the other.
(Remember, same computer, just 2 different accounts. And which one gets DCed is random.)
That's interesting. I remember reading once that FFXIV is SUPER twitchy about any kind of CPU misfiring (in some weird effort to prevent movement hacks I guess.... the flying RMT BLM bots would suggest it doesn't work). I could see running two clients side by side like that causing some issues if one of them missed its timing a couple times even if it didn't necessarily affect the other one.