Hello!
I've been racking my head around this issue for a long time now. I play in fullscreen mode but for ease of use (and possibly fixing my directx woes) I want to play in borderless windowed. However, when I use borderless windowed I get really stuttery performance.

What I mean by that is my fps reading says the game is running at 82 fps (my cap) but looking at it, it's clearly not. If I switch to fullscreen, buttery smooth, clearly running at 82fps.

I run two monitors. Main one is 1440p 165Hz with Gsync. The other 1080p 60hz no gsync. I've tried a lot of possible fixes but nothing has worked.
Can anyone help me?