I too have this problem. I too run a R9 380. No other games present this problem, and it cuts in randomly in FF XIV.

I have seen threads on here and on other forums that date back to 2015 with this exact problem, how come that there has not been taken any action to fight this, apparently very common, problem?

Also, this is my first reply here. Checking the forums leads me to think there is not much technical support, or support from the developers´side at al...