Can devs finally address the feature controller is having issues on PC.

[Ashiee]

I've played with a controller wired on PC for over 8 years now, and I will tell you, it's most likely a problem with your controller or wire and your PC rather than the FFXIV Client.

My suggestions:
1. Check the wire connecting your controller to PC. I have mostly used PS4 controllers with FFXIV, and about 85% of the times I ever had issues it was just needing to find a better wire. It's not just the PS4 controller, I've had to do that for a PS3 controller back in the day and I had to find a new wire for my PS5 controller after a week as well.
2. The Controllers battery might be screwing with it's connectivity to your PC, even though it's plugged in via a wire. For example, I had a controller that after running the game for about 8 hours, would start disconnecting from my PC every few minutes after, and I figured out the battery just wasn't getting charged while I was playing, or it wasn't charging fast enough.
3. I've had my PC try to save power using a controller, so I would have to go to USB Input Device Properties > Power Management > and Uncheck "Allow the computer to turn off this device to save power" since that would occasionally be the reason my controller would randomly disconnect.

Also, even if you aren't running FFXIV through steam or anything, if you ever played any other PC game through steam w/ a controller, then your controller might be using steam even if you never set it. I have had that problem before, though it hasn't really caused me any issues when it has happened. I wouldn't be surprised if there was input problems caused by that.