This just happened to me today and it's a fairly annoying bug. The in-game time (Eorzea time) is moving faster on my client than it should.

I'm playing on the PC with my girlfriend playing on the PS4 while in the same room. I look to her screen and it's nighttime on the map while on my screen it's daytime. I asked her what time it was in her game and we were 12 hours off.

I reset my client to try and fix the issue. The time did match when I logged in, but my time slowly got ahead of hers.

I also noticed that my running, walking and riding speeds were faster than everyone else's. Simple animations like clopping trees in gathering was faster.

My girlfriend and I entered a couple of frontline matches as well. However, if I run/ride for more than a few seconds I will get disconnected because I assume that my location is different from where I "should be" vs where I'm projected to be on my screen. Skill cooldown timers rollback because things are happening faster than they should relative to the server.

If this is a constant issue this may break the game.