Hi guys, since the latest Windows Creator update I'm having a lot of problems running FFXIV in borderless windowed.
I run a 1440p 144hz G-Sync monitor and a 1080p 60hz, the game start at 144fps like it always did but as soon as I click outside of the game windows (anywhere on my 2nd monitor, or I even just alt +tab) I can see my fps halving to 72.
The moment I click back in the game windows the framerate halves again reaching 29-35fps and it stay there no matter what, the only thing that bring it back to 144 is setting the game in fullscreen and back to borderless, but again the first click outside of the game start the loop again.
My build is:
i5 6600K
GTX 1080Ti
16gb DDR4
I tried with the following drivers: 385.69, 387.92, 387.98
I tried to enable/disable game bar/game mode/fullscreen optimisation.

Any suggestion?