Processor: AMD Ryzen 7 1800X

GPU: Radeon RX580 8gb

RAM: 32GB

OS: Windows 10 Pro

I have been having issues with this game the moment I decided to turn on DirectX 11 support when it was first provided. It used to be that the game would randomly crash with DX style errors unless I downgraded to DirectX 9 in the game settings.

After many patches,the game will run smoothly in DirectX 11 for most regular settings, even though the GPU usage being reported by the Radeon monitoring tools is a constant 100%.

However, having recently upgraded my monitor to a FreeSync/144hz capable curved panel, and trying to get FFXIV to output 144Hz or 120hz & higher frame rates than 60fps, the game now exhibits new problems:


attempting 144HZ:
Randomly while playing the game, no matter what I am doing, the screen will go completely black for a few (no more than 10) seconds, then continue displaying whatever is currently happening on screen.
The time between these blackouts is completely random, but grows more frequent the higher I set the "minimum framerate" settings.

attempting 120HZ:
The game will run smoothly, but the display brightness will change rapidly from slightly too dark to slightly too light in a rapid pattern


I have gone through my game library in Steam and confirmed that other game that can output at 120hz/144hz run without this issue (Deus Ex:Mankind Divided and Human Revolution, Doom 2016, etc).

I have purchased a new display port cable and have also tried an HDMI cable. I have tried running the game in lower graphical detail (keeping the 144HZ option on), I have completely reinstalled Windows, unistalled and reinstalled my graphics drivers and FFXIV twice...

I can also report that attempting to run a secondary monitor to play youtube/local video or to run programs that require odd hooks into the graphics card like VirtualBox also cause FFXIV to run poorly/freeze or cause the video I'm watching to do the same.

All of these problems go away (except for the excessive GPU usage) once I launch the game in DirectX 9 mode.