Mouse lag/slugishness

Maybe it was something I was used to before, I don't quite remember. I've been away from the game for a bit and started playing again when 2.5 launched and the mouse lag has been driving me up the wall. Every game I've played in my absence, I've had no issues. It's always as smooth and fast as if I were at the desktop.

But when I came back to FFXIV it was ever apparent that the mouse was not keeping pace with my movements at all. It's sluggish and even choppy at times. It's been the near death of others when I heal.

I dearly hope I'm not the only one dealing with this and if any one has any tips on making this better I would greatly appreciate it.