I want to do some more testing on this myself, such as whether or not it occurs when I am NOT in the game itself, and use the HDMI switch.

Anyway, on to the details. I have a self-built computer, with a GeForce GTX 660 video card. I have a DGFAN 5x1 4kUHD HDMI Switch to connect my computer, PS4, WiiU, and other systems to the same monitor (monitor has built-in speakers). I play Final Fantasy XIV on the computer, not a console system.

Right now I'm *trying* to sit at the summoning bell, and just send retainers out over and over to stock up on fire and wind shards to last me for a bit of crafting. Since the wait can be long, I figured I would switch back and forth between a game on my PS4 and my computer. I can switch to the PS4 with no problem. But when I switch back to the computer to check on my retainers, Final Fantasy crashes. It LOOKS like it's actually a problem with video and audio, as the errors it brings up are related to DirectX and audio files.

And those are the two things connected through my HDMI switch.

I have done this three times, to test and make sure I can repeat the result each time. Sure enough, when I come back to my PC, the game has crashed. I wouldn't be surprised if the switch causes it's own set of issues, as it causes problems if I shut down the *computer* and then go to my (already powered-on) PS4. But in this case, nothing else on the computer is affected except Final Fantasy.