What the engineer says seems to make sense - I've done a bit of digging on the issue. Sounds like improvements may be needed either in how Windows talks to graphics drivers or vice versa...or both.
Initially, I didn't use the Windows 10 driver and just kept my old one from Windows 8.1 (as normally for me, I don't normally need to worry about drivers when I have upgraded in the past) and found after a while of use it just kept randomly crashing the driver. I upgraded to the Windows 10 driver, that stopped and now this happened (VIDEO_TDR_FAILURE). First time though, but I thought I would look into it to try and prevent it in the future.
Anyway, for the sake of proving data:
Game: Final Fantasy XIV: A Realm Reborn (Using the Direct X 11 client)
Graphics Card: MSI NVidia GeForce GTX 980 4gb
Driver: Version: 355.60 - GeForce Windows 10 Driver
You are lucky to only have TDR errors, I have seen many BSOD crashes with recent GeForce drivers